Grounding multiple objects at once.

Hello, I’m using the Windows app and I was wondering if there is a way where you can translate multiple unattached objects to 0 z-axis, basically grounding them. I’m working on a woodworking project, and basically, the workflow has been blocking out the shape with individual pieces and then dismantling it to figure out a cut list. However, this leads to several dozen pieces at varying z-axis positions. Is there a way to snap multiple objects to an axis, or even individually one by one? Or does someone know an easier workflow to get a cut list? I’ve been looking through this forum and experimenting with the app but can’t figure it out.