How do I force the Player's Character to the same size?

I need everyone’s characters to be the same size as everyone else’s, as Players can’t fit through doors if they are too big. The scale tab in the game options doesn’t work for my purposes, as players can equip bundles. Is there any way to set it by script or anything?

Edit: Not this

You can set this in file → game settings → avatar

Look at the post and edit. Players can equip bundles.

You can just set it to R6 - that sets all Players to have a Standardised scaling.