Finally, I've managed to set up my night - to be honest I would say that the Scheduler tab is the least non-user friendly of all Ekos functions.

But I am again against a wall... The first 2 lines are my mosaic.
Then I reload the seq and rename the target as you can see in the picture, to be able to recapture those panels for 4 more hours.

The issue is then when I press the save button, Kstars craches. If I save only the first two lines it works fine.