Hi, Is it possible to have a menu which is fix?

Hi @andymedley , I can do this on an item, but I can’t do it on a whole ‘section’. When selecting the section the option ‘Fixed’ is greyed out.

On another (yet linked) note, do you know if it’s possible to do such effect (menu): https://lucyfolk.com/?gclid=EAIaIQobChMIr_-YkILO6gIV2RwrCh1O7gHlEAAYASAAEgINXvD_BwE