Three of us are more invested in organizing the events and promoting them. Once we come to an agreement as to when and where to hold the next event, we promote it mainly on Telegram. One of the organizers has the subscription for nostr:nprofile1qqsxvns8pl39uakaema9fy5uphjzajkssyqfx5r7yn0yvgs828xm02spzemhxue69uhhyetvv9ujuurjd9kkzmpwdejhgy936vc and he posts the events there too.