F
Suggest putting the options in tabs on the right side - "Sizing", "Appearance", "Artboard Label", "Slice Label" perhaps?
As long as there are only a few, logically organized tabs in a section that is still a logical and accessible way to organize these.
Just need to be careful that it doesn't get out of control and lead to one of the three cardinal sins of tabbing: scrolling tabs, multiple rows of tabs or tabs within tabs.