Second Level in plugin navigation / group plugins

  • Does anyone have a second level in the plugin tab navigation bar?
    What I want is to group plugins under a main topic.

    As example:

    In the navigation bar should be the plugin “Chats”. A click on Chats should open a second navigation bar with different plugins which are all grouped under the name Chats. As example: Mattermost, Telegram, …

    Any idea or better an example?