Hi Mathieu!
Thanks for getting in touch with us! Let me try to help you with this topic.
The Map view will center itself based on the venues for the events currently showing. Unfortunately, there is no built-in setting to modify this behaviour.
You can find all the map settings available by going to Events > Settings and scroll down to Map Settings.
Modifying the map behaviour will require custom coding. As a reference, let me point you to the following thread where George explains how you could achieve a similar customization > https://theeventscalendar.com/support/forums/topic/center-map-on-browsers-location/#dl_post-998189
I hope it helps! Let me know if you have any follow up questions and I’d be happy to help.
Best,
Victor