Rules on number of tenants?

Good day,

If I buy a first home (apartment or unit) and I live in it also, what rules apply to how many other people I can also rent it out with at the same time.  For example for a studio or a 1 bedroom unit if I also live there, how many other people can I rent out with.  And if it is a two bedroom unit, that I live in also, how many people can I rent out with.  Are there rules that restrict the number of other people that I can rent out to? And is it also dependant on how many bathrooms?

Thanks in advance…