Q: Trisquel 6 - How to move menu bar to upper screen border ?

Hi there,

I am afraid that this is a pretty dumb question but here it goes:
Yesterday I updated the PC of my daughter from Trisquel 5.5 to 6.0.
Everything worked fine so far but after the update the menu bar was on the lower part of the screen again.

Unfortunately I do not remember how to move the bar to the upper part of the screen. Trying some left mouse clicks on the free areas of the menu bar did not reveal any configuration for the taskbar.

What am I missing ?

Thanks,
Holger