Growing different femal plants in same room

Is it possible to grow different female plants in the same room? I have heard both no and yes and would appreciate any insight into the matter. Also, second part to the question is can you have another regular (unknown at this point whether a female or male) plant growing, 2 inches tall/3 days past germination in the same room as the same age female plants?

Thanks,

Newb at it

Yes you can, lots of growers grow different strains at the same time, you will need to put something under the smaller plants to raise them to the canopy height so they dont get get shaded. As for the unkown smaller plant yes you can stick that in there also just keep it at the sides as they dont like stong intense light when they are that small.