Adapting Restricted movement/Dynamic Lighting for individual tokens

Hi Everyone: Noob DM here and I have a question. Suppose I am running a map with DL and restricted movement, but a Druid takes the animal form of a rat to squeeze under a door to check the next room. How would I handle this? If I move the door, then the other players would see in. If I turn off restricted movement temporarily, then that player or all could just move through all the walls. Is there a way to effectively allow one player to move through a specific barier? Thanks!

Without the API, you would move their token under the door when they want to pass beneath it. With the API, you could give them a TokenMod command to move them through a wall in front of them: !token-mod --move 5ft

I just normally move the relevant token to the other side of the door.