If, when clicking on a line in the Plan, no action is suggested in the Sidebar, it is likely because the corresponding session has been closed.
From the "Sessions" section of your Manager Space, we recommend closing the sessions for which all actions are completed (such as when the cost of the session is updated, all documents have been uploaded, and participant attendance has been updated in the Plan...).
Once a Session is closed, all possible actions on the lines in the Plan associated with the participants are locked.
If necessary, you can reopen a session that was closed too early. From the Sessions > "Closed" tab, select the relevant line and click on the "+Reopen session" button.
After this action, you will once again have access to the various possible actions from the lines in the Plan related to the session.