When you double click on the canvas, you can create a new note. After it's created, a new "Note" window appears, and there is a selector menu which lets you select any journal note to pin. The problem is that all the notes appear there, including the ones the user does not have access to. If they select one for which thay have no permission, they can't see it on the canvas, but it's still added (and viewable by users that have permission).
When you double click on the canvas, you can create a new note. After it's created, a new "Note" window appears, and there is a selector menu which lets you select any journal note to pin. The problem is that all the notes appear there, including the ones the user does not have access to. If they select one for which thay have no permission, they can't see it on the canvas, but it's still added (and viewable by users that have permission).
Here is an example from one of my players.