When you create a prospecting or ticket management campaign, it is not a user but a team that will handle the processing of actions.
In this way, a team will be able to have access to certain campaigns, which other teams will not see.
The "Manage teams" page allows you to see the teams already created and modify their composition.
To know how to assign a user to a team and manage the composition of teams, you can consult the documentation How to assign a user to a team
Team assignment is managed in the campaign settings.
There are 2 parts:
* supervision rights are added upstream to the account of the user concerned (see how to modify a user's rights).
For any questions, contact support.