Dear pyMOL users,
I'm puzzled about how to solve an apparently simple task. 

I loaded on PyMOL two molecules (e.g., m1 and m2) and I wanted to select two different sets of atoms from each of them.
Let's say I want to select atoms [1,2,3] from m1 and and atoms [7,8,9] from m2.

I tried several combinations of "load" and "select", but no option worked.
The last selection is always applied to both molecules. I also Googled it, without any success.

Does anyone know if its possible to make a selection in isolation over a given molecule?
Any suggestion will be highly appreciated!

Thanks in advance,