Welcome, theres several map tool experts here. In fact the dev Trevor sometimes pops in. Dorpond and Torstan use it a lot I believe. We have users of many VTTs and the devs of some more. Heruca writes BattlegroundRPG for example then last and least theres me who writes another. So VTT questions - but not specifically MapTool ones - I can answer but for MT you should get a response in no time if you ask.