When a user starts a session inside senhasegura, this session is available in the menu Pam Core → Remote Sessions, and you can see the session happening Live.
Inside this Live, if you have the correct privilege, you can click on the ‘Hold On’ button to stop the user from executing any action inside this session.
But, the user can’t use the ‘Hold On’ function in a session that he started himself, only another user can do this.
Example of a user that tries stopping his own session:
A user stoping the session of another user:
This is the correct behavior.