Salut Luc,
Thanks for using our plugins and welcome to the forums! Don’t worry about your English, it is really good. Definitely better than my French. 🙂
Thanks for the kind words, we’re always happy to hear when someone likes the fruit of our work!
Unfortunately we don’t have a solution focusing specifically on venue submission.
With Community Events you can give the opportunity to your users to create new venues as well, however that only works if they also submit an event.
As a workaround, what you could do is have the users create a fake event called Venue Submission and create the venue. Enable the setting that newly submitted events require approval or become draft. This way the event will not show on the front-end and the venue will still be created.
Does this help?
Andras