I am inclined to say no to my 14 yo who has asked if he can 'hang out' in a local village with some mates, while we are at work. He has no particular plans, just to meet up with a mate and go to an unspecified girl's house. I have said I have no problem with him going to someone's house if I know where he is going to be, and for how long and somewhere where I can find him if need be. Or for him to have his friends over here. Or to meet them in town and do something specific like go to the cinema. Or book a badminton court, go swimming etc..
But general hanging out, with people unknown, in a village with lots of 'teenage boy hanging out type problems cos there's feck all to do there' that is a bus ride away, for an unspecified amount of time, or in some girls house with no discussion about whether her parents are expecting a bunch of teenage Boys to be there. I don't think so, but since he's my first ever teenager, except for the irresponsible one I was many years ago, perhaps you can advise me if this is ok and I'm just being an arse.