In the "Service times" tab page, there are 2 possibilities to add a remark:

1. By right-clicking on the activity and choosing Add remark.

2. By right-clicking on the activity, selecting Edit and choosing Add remark at the bottom of the window.

The following window opens:

The added remarks are visible in the "Remarks" tab page, where they can be treated, edited and deleted by other users who follow up this vehicle.