vey quick uv mapping question

I am comfortable with uv mapping one object but have never tried more than one. My question if you have several objects can you and should unwrap them all at once or sepeartely?


You can’t edit the UVmaps of two objects at the same time right now. Just go one at a time.

But some objects have more than one part. can uv map that? Example,
a head with eyes, and a hat or whatever.