How do you position the text for the pin number?

I'm starting to create a library for my first board using Allegro, and I want to start off making footprints that I won't have to change later on.

How do you position the text for the pin number and why? Do you size and position the text so that it fits inside the copper pad? Do you offset it to the side of the pad? Every method I try is extremely tedious, for example, picking the text size so it fits, and then offsetting it.

Is this text actually used for anything useful? Is it just used for making assembly drawings and hidden at all other times? If that is the case, then I will probably position it inside the pad outline. If you do it this way, do you bother offsetting the text so it is centered inside the pin outline?

Thanks!