Moving objects question... & SubTools vs Polygroups vs Layers

[accesskb]

Hi,
Could someone explain or direct me to the section in help … I would like to know how to move objects around so they’re constrained to what I want (like constrained to sit on planes of an underlying object, its vertices or along edges, or centered etc.)

Also, could someone quickly explain the difference between SubTools, PolyGroups, Layers? I’m only familiar with ‘layers’ in other modeling softwares. Which one is similar to ‘layers’ found in other modeling softwares? What are each used for? pros/cons etc?

thanks

[beta_channel]

Zbrush onlu supports screen space and world space axis moves. Your transpose line does snap to erts though, so you can snap both ends to an edge and the use the white dot to match you screen space with that edge normal.

Subtools are liken to elements or meshes in other software.
Polygruops are liken to selection sets
Layers are like layers.