I'm not sure what you mean by Marker Objects. If you are referring to the Dimension Marker that is part of the Window or Door, their visibility can be controlled via Model View Options (MVO): MVO > Options for Construction Elements > Door (or Window) Options: with Markers. If you are referring to an independent marker of some other type, then use its Layer visibility (Show/Hide).
David
David Maudlin / Architect www.davidmaudlin.com Digital Architecture AC29 USA Perpetual • Mac mini M4 Pro OSX15 | 64 gb ram • MacBook Pro M3 Pro | 36 gb ram OSX14