Any way for players to move between maps on their own?

I'm going to be running a heist in Curse of Strahd into Strahds Castle. Since the maps for that place are very large and have multiple floors it is broken up into several maps that I need to switch between.  I was hoping there would be a way that the players can switch the maps on their own so they can plan ahead a route without needing to ask me to move back and forth between maps. I would prefer not to make them GMs in-game because I have notes written on the Gm layer that I would prefer them not to see.  Please let me know if there is a feature in Roll 20 that will allow me to do this or other solutions you might be able to suggest.  Thank you. 

Not possible without Pro subscription and APIs. Teleport is one that can do this, might be others.

As Andreas said, it’s only possible with an API script (Pro subscription required). I use the  MapChange Script  myself. 

Echoes recommendation of Map Change. You can even create a  Chat Menu  of places the players have access to. I use this in my own game to make campaign maps available all the time. But yeah, all these solutions require a Pro subscriber's access to the API.

Smalls said: I was hoping there would be a way that the players [...] can plan ahead a route without needing to ask me to move back and forth between maps. Another suggestion that doesn't require a Pro subscription would be to take the map images and compile them into a single .jpg that you could share with the players.  That wouldn't require them to move around map pages at all, and they could plan out a route as desired.

Maybe making handouts of the maps that the players have access to is enough? For planning that should be sufficient. It saves storage, as you can reuse the images that you already have.