When the client has an overview of his own schedule, they can click the + to add an activity. There are several options, but they are unable to find a "Note" tab.

For example, the client completed a workout, they can only add a comment which is automatically shared with us, trainers. This can be annoying for them.

My idea is that the client may have the possibility to leave a note as a reminder or personal observation within the app that the trainer won't see but may be important for them to note and add it to the schedule if needed.