diff --git a/shop/app/admin/wysiwyg/wysiwyg-client.tsx b/shop/app/admin/wysiwyg/wysiwyg-client.tsx
index cdc53b5..1a9c3b8 100644
--- a/shop/app/admin/wysiwyg/wysiwyg-client.tsx
+++ b/shop/app/admin/wysiwyg/wysiwyg-client.tsx
@@ -91,7 +91,8 @@ export function WysiwygAdminClient({
           free_items_limit: 0,
           preselect: false,
           show_in_kauf: mode === 'purchase',
-          show_in_abo: mode === 'subscription'
+          show_in_abo: mode === 'subscription',
+          resets_others: false
         })
         setCategories([...categories, newCat])
       } catch (e) {
@@ -182,7 +183,7 @@ export function WysiwygAdminClient({
                     />
                     
                     {/* Kategorie Attribute (Toggles) */}
-                    <div className="flex items-center gap-6 mt-3 text-xs text-slate-400">
+                    <div className="flex flex-wrap items-center gap-6 mt-3 text-xs text-slate-400">
                       <label className="flex items-center gap-2 cursor-pointer select-none">
                         <input
                           type="checkbox"
@@ -196,11 +197,49 @@ export function WysiwygAdminClient({
                         <input
                           type="checkbox"
                           checked={cat.allow_multiselect}
-                          onChange={(e) => handleCategoryToggle(cat.id, { allow_multiselect: e.target.checked })}
+                          onChange={(e) => {
+                            const checked = e.target.checked
+                            handleCategoryToggle(cat.id, { 
+                              allow_multiselect: checked,
+                              ...(checked ? { preselect: false } : {})
+                            })
+                          }}
                           className="rounded border-white/10 bg-white/5 text-primary focus:ring-0 focus:ring-offset-0"
                         />
                         <span>Mehrfachauswahl</span>
                       </label>
+                      {!cat.allow_multiselect && (
+                        <label className="flex items-center gap-2 cursor-pointer select-none">
+                          <input
+                            type="checkbox"
+                            checked={cat.preselect}
+                            onChange={(e) => handleCategoryToggle(cat.id, { preselect: e.target.checked })}
+                            className="rounded border-white/10 bg-white/5 text-primary focus:ring-0 focus:ring-offset-0"
+                          />
+                          <span>Vorauswahl</span>
+                        </label>
+                      )}
+                      <label className="flex items-center gap-2 cursor-pointer select-none">
+                        <input
+                          type="checkbox"
+                          checked={cat.resets_others}
+                          onChange={(e) => handleCategoryToggle(cat.id, { resets_others: e.target.checked })}
+                          className="rounded border-white/10 bg-white/5 text-primary focus:ring-0 focus:ring-offset-0"
+                        />
+                        <span>Rest zurücksetzen</span>
+                      </label>
+                      {cat.allow_multiselect && (
+                        <div className="flex items-center gap-2">
+                          <span>Freie Artikel Limit:</span>
+                          <input
+                            type="number"
+                            min={0}
+                            value={cat.free_items_limit}
+                            onChange={(e) => handleCategoryToggle(cat.id, { free_items_limit: parseInt(e.target.value) || 0 })}
+                            className="w-12 rounded border-white/10 bg-white/5 text-white focus:ring-0 focus:ring-offset-0 px-1 py-0.5 text-center"
+                          />
+                        </div>
+                      )}
                     </div>
                   </div>
                   <button
diff --git a/shop/components/admin/category-dialog.tsx b/shop/components/admin/category-dialog.tsx
index 17e91d7..cadc0c0 100644
--- a/shop/components/admin/category-dialog.tsx
+++ b/shop/components/admin/category-dialog.tsx
@@ -48,6 +48,7 @@ const categorySchema = z.object({
   preselect: z.boolean().default(true),
   show_in_kauf: z.boolean().default(true),
   show_in_abo: z.boolean().default(true),
+  resets_others: z.boolean().default(false),
 })
 
 type CategoryFormValues = z.infer<typeof categorySchema>
@@ -75,6 +76,7 @@ export function CategoryDialog({
       preselect: category?.preselect ?? true,
       show_in_kauf: category?.show_in_kauf ?? true,
       show_in_abo: category?.show_in_abo ?? true,
+      resets_others: category?.resets_others ?? false,
     },
   })
 
@@ -269,6 +271,29 @@ export function CategoryDialog({
                   />
                 )}
 
+                 <FormField
+                  control={form.control}
+                  name="resets_others"
+                  render={({ field }) => (
+                    <FormItem className="flex flex-row items-start space-x-3 space-y-0 rounded-lg border border-slate-200 dark:border-white/10 bg-slate-50 dark:bg-white/5 p-4">
+                      <FormControl>
+                        <Checkbox
+                          checked={field.value}
+                          onCheckedChange={field.onChange}
+                        />
+                      </FormControl>
+                      <div className="space-y-1 leading-none">
+                        <FormLabel className="text-slate-900 dark:text-white font-semibold cursor-pointer">
+                          Anderen Kategorien bei Auswahl zurücksetzen
+                        </FormLabel>
+                        <p className="text-xs text-slate-500 dark:text-slate-400">
+                          Wenn aktiv, setzt die Auswahl eines Artikels dieser Kategorie alle anderen Kategorien zurück.
+                        </p>
+                      </div>
+                    </FormItem>
+                  )}
+                />
+
                 <div className="grid grid-cols-2 gap-4">
                   <FormField
                     control={form.control}
diff --git a/shop/components/order-wizard.tsx b/shop/components/order-wizard.tsx
index b363a25..df62d47 100644
--- a/shop/components/order-wizard.tsx
+++ b/shop/components/order-wizard.tsx
@@ -379,30 +379,61 @@ export function OrderWizard({
         nextProductId = productId
       }
 
+      const isSelectedNow = cat?.allow_multiselect
+        ? nextProductIds.includes(productId)
+        : nextProductId === productId
+
+      const shouldReset = isSelectedNow && cat?.resets_others
+
       const next = {
         ...prev,
         [catId]: { productId: nextProductId, productIds: nextProductIds, moduleIds: [] },
       }
 
-      // Automatically deselect now conflicting products in other categories
-      const selectedIds: string[] = []
-      Object.values(next).forEach(s => {
-        if (s.productIds && s.productIds.length > 0) {
-          s.productIds.forEach(id => {
-            if (id) selectedIds.push(id)
-          })
-        } else if (s.productId) {
-          selectedIds.push(s.productId)
-        }
-      })
+      if (shouldReset) {
+        // Reset all other categories
+        categories.forEach(c => {
+          if (c.id !== catId) {
+            next[c.id] = { productId: null, productIds: [], moduleIds: [] }
+          }
+        })
+      } else {
+        // Automatically deselect now conflicting products in other categories
+        const selectedIds: string[] = []
+        Object.values(next).forEach(s => {
+          if (s.productIds && s.productIds.length > 0) {
+            s.productIds.forEach(id => {
+              if (id) selectedIds.push(id)
+            })
+          } else if (s.productId) {
+            selectedIds.push(s.productId)
+          }
+        })
 
-      categories.forEach(c => {
-        if (c.id === catId) return
-        const s = next[c.id]
-        if (c.allow_multiselect && s?.productIds) {
-          const validProductIds = s.productIds.filter(pId => {
-            const prod = products.find(p => p.id === pId)
-            const otherSelectedProductIds = selectedIds.filter(id => id !== pId)
+        categories.forEach(c => {
+          if (c.id === catId) return
+          const s = next[c.id]
+          if (c.allow_multiselect && s?.productIds) {
+            const validProductIds = s.productIds.filter(pId => {
+              const prod = products.find(p => p.id === pId)
+              const otherSelectedProductIds = selectedIds.filter(id => id !== pId)
+              const isExcluded = prod && (
+                otherSelectedProductIds.some(otherId => {
+                  const otherProd = products.find(p => p.id === otherId)
+                  return otherProd?.exclusions?.includes(prod.id)
+                }) ||
+                prod.exclusions?.some(exId => otherSelectedProductIds.includes(exId))
+              )
+              return !isExcluded
+            })
+            next[c.id] = {
+              productId: validProductIds[0] || null,
+              productIds: validProductIds,
+              moduleIds: []
+            }
+          } else if (s?.productId) {
+            const prod = products.find(p => p.id === s.productId)
+            const otherSelectedProductIds = selectedIds.filter(id => id !== s.productId)
             const isExcluded = prod && (
               otherSelectedProductIds.some(otherId => {
                 const otherProd = products.find(p => p.id === otherId)
@@ -410,28 +441,12 @@ export function OrderWizard({
               }) ||
               prod.exclusions?.some(exId => otherSelectedProductIds.includes(exId))
             )
-            return !isExcluded
-          })
-          next[c.id] = {
-            productId: validProductIds[0] || null,
-            productIds: validProductIds,
-            moduleIds: []
+            if (isExcluded) {
+              next[c.id] = { productId: null, productIds: [], moduleIds: [] }
+            }
           }
-        } else if (s?.productId) {
-          const prod = products.find(p => p.id === s.productId)
-          const otherSelectedProductIds = selectedIds.filter(id => id !== s.productId)
-          const isExcluded = prod && (
-            otherSelectedProductIds.some(otherId => {
-              const otherProd = products.find(p => p.id === otherId)
-              return otherProd?.exclusions?.includes(prod.id)
-            }) ||
-            prod.exclusions?.some(exId => otherSelectedProductIds.includes(exId))
-          )
-          if (isExcluded) {
-            next[c.id] = { productId: null, productIds: [], moduleIds: [] }
-          }
-        }
-      })
+        })
+      }
 
       return next
     })
diff --git a/shop/lib/types.ts b/shop/lib/types.ts
index 18ba045..9161ae6 100644
--- a/shop/lib/types.ts
+++ b/shop/lib/types.ts
@@ -31,6 +31,7 @@ export type Category = {
   preselect: boolean
   show_in_kauf?: boolean
   show_in_abo?: boolean
+  resets_others: boolean
   created_at: string
 }
 
diff --git a/shop/supabase/migrations/20260709153000_add_resets_others_to_categories.sql b/shop/supabase/migrations/20260709153000_add_resets_others_to_categories.sql
new file mode 100644
index 0000000..c8a2bc1
--- /dev/null
+++ b/shop/supabase/migrations/20260709153000_add_resets_others_to_categories.sql
@@ -0,0 +1,2 @@
+-- Add resets_others column to categories table
+ALTER TABLE public.categories ADD COLUMN IF NOT EXISTS resets_others BOOLEAN DEFAULT false NOT NULL;