diff --git a/app/Member/FilterScope.php b/app/Member/FilterScope.php
index 546b5394..4442563a 100644
--- a/app/Member/FilterScope.php
+++ b/app/Member/FilterScope.php
@@ -19,8 +19,8 @@ class FilterScope extends Filter
     public function __construct(
         public bool $ausstand = false,
         public ?string $billKind = null,
-        public ?int $activityId = null,
-        public ?int $subactivityId = null,
+        public array $activityIds = [],
+        public array $subactivityIds = [],
         public string $search = '',
         public ?int $groupId = null,
     ) {
@@ -53,14 +53,14 @@ class FilterScope extends Filter
             $query->where('group_id', $this->groupId);
         }
 
-        if ($this->subactivityId || $this->activityId) {
+        if (count($this->subactivityIds) + count($this->activityIds) > 0) {
             $query->whereHas('memberships', function ($q) {
                 $q->active();
-                if ($this->subactivityId) {
-                    $q->where('subactivity_id', $this->subactivityId);
+                if (count($this->subactivityIds)) {
+                    $q->whereIn('subactivity_id', $this->subactivityIds);
                 }
-                if ($this->activityId) {
-                    $q->where('activity_id', $this->activityId);
+                if (count($this->activityIds)) {
+                    $q->whereIn('activity_id', $this->activityIds);
                 }
             });
         }
diff --git a/resources/js/components/form/Multipleselect.vue b/resources/js/components/form/Multipleselect.vue
new file mode 100644
index 00000000..d4d00cfa
--- /dev/null
+++ b/resources/js/components/form/Multipleselect.vue
@@ -0,0 +1,111 @@
+<template>
+    <label class="field-wrap" :for="id" :class="`field-wrap-${size}`">
+        <span v-if="label" class="field-label">
+            {{ label }}
+            <span v-show="required" class="text-red-800">&nbsp;*</span>
+        </span>
+        <div class="relative real-field-wrap" :class="`size-${size}`">
+            <div
+                @click="visible = !visible"
+                class="flex items-center border-gray-600 text-gray-300 leading-none border-solid bg-gray-700 w-full appearance-none outline-none rounded-lg size-sm text-xs px-1 border pr-6"
+                v-text="`${value.length} Einträge ausgewählt`"
+            ></div>
+            <div v-show="visible" class="absolute shadow-lg bg-gray-600 border border-gray-500 rounded-lg p-2 top-7">
+                <div v-for="(option, index) in parsedOptions" class="flex items-center space-x-2" :key="index">
+                    <f-switch :id="`${id}-${index}`" size="sm" :items="value.includes(option.id)" :value="option.id" @input="trigger(option, $event)"></f-switch>
+                    <div class="text-sm text-gray-200" v-text="option.name"></div>
+                </div>
+            </div>
+
+            <div class="info-wrap">
+                <div v-if="hint" v-tooltip="hint">
+                    <svg-sprite src="info-button" class="info-button"></svg-sprite>
+                </div>
+                <div class="px-1 relative" v-if="size != 'xs'">
+                    <svg-sprite class="chevron w-3 h-3 fill-current" src="chevron-down"></svg-sprite>
+                </div>
+                <div class="px-1 relative" v-if="size == 'xs'">
+                    <svg-sprite class="chevron w-2 h-2 fill-current" src="chevron-down"></svg-sprite>
+                </div>
+            </div>
+        </div>
+    </label>
+</template>
+
+<script>
+import map from 'lodash/map';
+
+export default {
+    data: function () {
+        return {
+            visible: false,
+        };
+    },
+    props: {
+        disabled: {
+            type: Boolean,
+            default: function () {
+                return false;
+            },
+        },
+        id: {},
+        inset: {
+            type: Boolean,
+            default: false,
+        },
+        size: {
+            default: function () {
+                return 'base';
+            },
+        },
+        emptyLabel: {
+            default: false,
+            type: Boolean,
+        },
+        value: {
+            default: undefined,
+        },
+        label: {
+            default: null,
+        },
+        required: {
+            type: Boolean,
+            default: false,
+        },
+        name: {
+            required: true,
+        },
+        hint: {},
+        options: {
+            default: function () {
+                return [];
+            },
+        },
+    },
+    computed: {
+        parsedOptions() {
+            return Array.isArray(this.options)
+                ? this.options
+                : map(this.options, (value, key) => {
+                      return {name: value, id: key};
+                  });
+        },
+    },
+    methods: {
+        trigger(option, v) {
+            var value = [...this.value];
+
+            this.$emit('input', value.includes(option.id) ? value.filter((cv) => cv !== option.id) : [...value, option.id]);
+        },
+        clear() {
+            this.$emit('input', null);
+        },
+    },
+};
+</script>
+
+<style scope>
+.inset-bg {
+    background: linear-gradient(to bottom, hsl(247.5, 66.7%, 97.6%) 0%, hsl(247.5, 66.7%, 97.6%) 41%, hsl(0deg 0% 100%) 41%, hsl(180deg 0% 100%) 100%);
+}
+</style>
diff --git a/resources/js/views/member/VIndex.vue b/resources/js/views/member/VIndex.vue
index 0e1750b1..fc1ba875 100644
--- a/resources/js/views/member/VIndex.vue
+++ b/resources/js/views/member/VIndex.vue
@@ -33,24 +33,24 @@
                 label="Rechnung"
                 size="sm"
             ></f-select>
-            <f-select
-                id="activity_id"
-                @input="setFilter('activity_id', $event)"
+            <f-multipleselect
+                id="activity_ids"
+                @input="setFilter('activity_ids', $event)"
                 :options="data.meta.filterActivities"
-                :value="getFilter('activity_id')"
-                label="Tätigkeit"
+                :value="getFilter('activity_ids')"
+                label="Tätigkeiten"
                 size="sm"
-                name="activity_id"
-            ></f-select>
-            <f-select
-                id="subactivity_id"
-                @input="setFilter('subactivity_id', $event)"
+                name="activity_ids"
+            ></f-multipleselect>
+            <f-multipleselect
+                id="subactivity_ids"
+                @input="setFilter('subactivity_ids', $event)"
                 :options="data.meta.filterSubactivities"
-                :value="getFilter('subactivity_id')"
-                label="Untertätigkeit"
+                :value="getFilter('subactivity_ids')"
+                label="Untertätigkeiten"
                 size="sm"
-                name="subactivity_id"
-            ></f-select>
+                name="subactivity_ids"
+            ></f-multipleselect>
             <button class="btn btn-primary label mr-2" @click.prevent="exportMembers">
                 <svg-sprite class="w-3 h-3 xl:mr-2" src="save"></svg-sprite>
                 <span class="hidden xl:inline">Exportieren</span>