diff --git a/native/roles/change-roles-header-right-button.react.js b/native/roles/change-roles-header-right-button.react.js
new file mode 100644
--- /dev/null
+++ b/native/roles/change-roles-header-right-button.react.js
@@ -0,0 +1,72 @@
+// @flow
+
+import { useNavigation } from '@react-navigation/native';
+import invariant from 'invariant';
+import * as React from 'react';
+import { Text } from 'react-native';
+import { TouchableOpacity } from 'react-native-gesture-handler';
+
+import {
+  changeThreadMemberRoles,
+  changeThreadMemberRolesActionTypes,
+} from 'lib/actions/thread-actions.js';
+import {
+  useDispatchActionPromise,
+  useServerCall,
+} from 'lib/utils/action-utils.js';
+
+import type { NavigationRoute } from '../navigation/route-names';
+import { useColors } from '../themes/colors.js';
+
+type Props = {
+  +route: NavigationRoute<'ChangeRolesScreen'>,
+};
+
+function ChangeRolesHeaderRightButton(props: Props): React.Node {
+  const { threadInfo, memberInfo, role: selectedRole } = props.route.params;
+  const { role: initialRole } = memberInfo;
+  invariant(selectedRole, 'Expected selected role to be defined');
+  const navigation = useNavigation();
+
+  const callChangeThreadMemberRoles = useServerCall(changeThreadMemberRoles);
+  const dispatchActionPromise = useDispatchActionPromise();
+
+  const { purpleLink } = useColors();
+  const textStyle = React.useMemo(
+    () => ({
+      color: purpleLink,
+      marginRight: 10,
+    }),
+    [purpleLink],
+  );
+
+  const handleSave = React.useCallback(() => {
+    if (selectedRole === initialRole) {
+      navigation.goBack();
+      return;
+    }
+
+    dispatchActionPromise(
+      changeThreadMemberRolesActionTypes,
+      callChangeThreadMemberRoles(threadInfo.id, [memberInfo.id], selectedRole),
+    );
+
+    navigation.goBack();
+  }, [
+    callChangeThreadMemberRoles,
+    dispatchActionPromise,
+    initialRole,
+    memberInfo.id,
+    navigation,
+    selectedRole,
+    threadInfo.id,
+  ]);
+
+  return (
+    <TouchableOpacity onPress={handleSave}>
+      <Text style={textStyle}>Save</Text>
+    </TouchableOpacity>
+  );
+}
+
+export default ChangeRolesHeaderRightButton;
diff --git a/native/roles/change-roles-screen.react.js b/native/roles/change-roles-screen.react.js
--- a/native/roles/change-roles-screen.react.js
+++ b/native/roles/change-roles-screen.react.js
@@ -3,13 +3,17 @@
 import { useActionSheet } from '@expo/react-native-action-sheet';
 import invariant from 'invariant';
 import * as React from 'react';
-import { View, Text, Platform } from 'react-native';
+import { View, Text, Platform, ActivityIndicator } from 'react-native';
 import { TouchableOpacity } from 'react-native-gesture-handler';
 import { useSafeAreaInsets } from 'react-native-safe-area-context';
 
+import { changeThreadMemberRolesActionTypes } from 'lib/actions/thread-actions.js';
+import { createLoadingStatusSelector } from 'lib/selectors/loading-selectors.js';
+import type { LoadingStatus } from 'lib/types/loading-types.js';
 import type { RelativeMemberInfo, ThreadInfo } from 'lib/types/thread-types.js';
 import { values } from 'lib/utils/objects.js';
 
+import ChangeRolesHeaderRightButton from './change-roles-header-right-button.react.js';
 import UserAvatar from '../avatars/user-avatar.react.js';
 import type { ChatNavigationProp } from '../chat/chat.react';
 import SWMansionIcon from '../components/swmansion-icon.react.js';
@@ -28,11 +32,23 @@
   +route: NavigationRoute<'ChangeRolesScreen'>,
 };
 
+const changeRolesLoadingStatusSelector = createLoadingStatusSelector(
+  changeThreadMemberRolesActionTypes,
+);
+
 function ChangeRolesScreen(props: Props): React.Node {
-  const { navigation } = props;
+  const { navigation, route } = props;
   const { threadInfo, memberInfo, role } = props.route.params;
   invariant(role, 'Role must be defined');
 
+  const changeRolesLoadingStatus: LoadingStatus = useSelector(
+    changeRolesLoadingStatusSelector,
+  );
+  const activityIndicatorStyle = React.useMemo(
+    () => ({ paddingRight: 15 }),
+    [],
+  );
+
   const styles = useStyles(unboundStyles);
 
   const [selectedRole, setSelectedRole] = React.useState<string>(role);
@@ -104,6 +120,24 @@
     showActionSheetWithOptions,
   ]);
 
+  React.useEffect(() => {
+    navigation.setOptions({
+      // eslint-disable-next-line react/display-name
+      headerRight: () => {
+        if (changeRolesLoadingStatus === 'loading') {
+          return (
+            <ActivityIndicator
+              size="small"
+              color="white"
+              style={activityIndicatorStyle}
+            />
+          );
+        }
+        return <ChangeRolesHeaderRightButton route={route} />;
+      },
+    });
+  }, [changeRolesLoadingStatus, navigation, activityIndicatorStyle, route]);
+
   return (
     <View>
       <View style={styles.descriptionBackground}>