Hi Laurent,

There is no capability to tag a team's work queue in pulse post.

Instead, you can leverage Spaces in App Studio. Relevant users can be added to Space as a Team and tagging can be done using @<SPACE_Name> in pulse posts.

How to Create Space is in the embedded link above and more info about collaborating with users by space is here.

Eg:- Pulse tagging by space name.

Let me know if this helps!