I'm a new D&D 5E Dungeon Master and I've found out recently about tidal locking.
For the first RPG setting I'm preparing with a friend, the planet the players will be on has 3 moons. Me and another DM will play two different campaigns on the same world, we decided to play them on different sides of the planet (imagine cutting the "sphere" vertically passing through the north and south poles and perpendicular to the equator).
Now on my campaign the players and NPCs have no idea a third moon exists, since it will only show itself on my friend's side of the planet.
We figured the moon would have to be tidally locked, for flavour it would be always visible day and night from the place they will start on, always in the center of the sky (basically showing the same side of the moon on the same side of the world).
Would that be possible or make any sense in reality from physics' perspective?
I've seen this similar question: Multiple moons but only one of them is tidally locked to its planet? (I'm bad at math/physics so I can't really think too much on the equations but I was wondering if the case I described would be feasible)