I have the following configuration:
How can I change the cell width (just visually) while keeping the same cell duration of 10 minutes (s. attached screen shot)
You can do that by increasing the cellWidth value:
OK. Thank you. I tried this of course, but it seemd not to work. After your answer I digged deeper in the code and foud out that another code, which wasn't written by me, changes the cell width afterwards.