Creative mode (Fortnite)

I decided to create a map of the genre BOX FIGHT, but there was confusion. Itself the box is created from brick. The problem is as follows:
When you start the game, everything happens perfectly, the gun is issued, HP/armor/barriers -- all okay. BUT... Any player can edit those brick walls/ceilings. The question is: how to disable edit the buildings I did at the stage of creating the cards? Thanks in advance <3