Icyman

New user ( mainly use for retopo and UV unwarp cause this software is so good at it ) i am wondering how would one go about importing different parts of a mesh to retopo lets say you have various high poly meshes and u import them in separately in different groups and you can visually on and off the display like part of helmet follow by part of leg armor to retopo different parts , cause i when use it from the opening menu re-topology and import high poly mesh i don't know how to go about to import additional high poly meshes and where the tab of it would be at