You created a new workspace in the Modern UX and would like a way to restrict access to it.
Clarity 16+
Currently, this behavior is not available.
Custom navigation tiles do not currently inherit the dynamic visibility logic of standard tiles like "Projects" or "Ideas." Standard tiles are hard-coded to check for specific "Navigate" rights, whereas custom tiles are generally visible to all users once added to the menu.
To manage this, please consider the following: