zulip/web/templates/settings/user_groups_admin.hbs

<div id="user-groups-admin" class="settings-section" data-name="user-groups-admin">
    {{#if (eq realm_user_group_edit_policy policy_values.by_members.code) }}
    <div class="tip">{{t 'Only group members, organization administrators and moderators can modify a group.' }}</div>
    {{else if (eq realm_user_group_edit_policy policy_values.by_full_members.code) }}
    <div class="tip">{{t 'Only full members belonging to the group, organization administrators and moderators can modify a group.' }}</div>
    {{else if (eq realm_user_group_edit_policy policy_values.by_moderators_only.code) }}
    <div class="tip">{{t 'Only organization administrators and moderators can modify user groups in this organization.' }}</div>
    {{else}}
    <div class="tip">{{t 'Only organization administrators can modify user groups in this organization.' }}</div>
    {{/if}}

    {{#unless is_guest}}
        <p>
            {{#tr}}
                User groups allow you to <z-link>mention</z-link> multiple users at once. When you mention a user group, everyone in the group is notified as if they were individually mentioned.
                {{#*inline "z-link"}}<a href="/help/mention-a-user-or-group" target="_blank" rel="noopener noreferrer">{{> @partial-block}}</a>{{/inline}}
            {{/tr}}
        </p>
        {{#if can_edit_user_groups}}
            <button id="show-add-user-group-modal" class="button rounded sea-green">
                {{t 'Add a new user group' }}
            </button>
        {{/if}}
    {{/unless}}

    <div id="user-groups" class="new-style"></div>
</div>