My current ranking should allow me to get into qualies of ATP events, but not in the main draw yet. As I understand, it's allowed to play qualies at the same time as the main draw in another tournament.
My question is, can I for example commit for the qualies of an ATP event that takes place at week #30 (which means the qualies will probably be in Saturday-Sunday of week #29), and at the same time commit for the main draw of a challenger in week #30, in case I go out in the ATP qualies?
Playing in qualies at the same time as the MD in another tournament is only during Grand Slams. So no, you are not allowed!