How can I get the character to spawn on the spawn and not on a building above it?

I am making a prisoners team that you can join by clicking a GUI, I need the prisoners to spawn in a jail I made where I put the spawn. I have read there needs to be a 10 stud tall ceiling but I don't have room for that and was wondering if there was another way. I also can't change the team to neutral because they need to be on the prisoners team. I have a team backpack script but it only works on respawn so it can't be a teleport to jail GUI. Is there ANY way to get them to SPAWN in the jail without being on top of it. If not please tell me and I will make it a teleport script that when it teleports it will also remove the tools from the players backpack. Thanks, crazynerd11

Try making the roof noncollide

You put an invisible block on top of the spawn.