A: What are you doing putting tape on the floor? B: I am trying to create boundaries to section...
A: What are you doing putting tape on the floor? B: I am trying to create boundaries to section off the space between my tenant and me. The space over here is theirs, and the space on the other side of the tape is mine.
Part of the field was sectioned off for temporary parking.
Section off the room before you start painting the walls.
The detective sectioned off the area on the map where the suspect showed up on the security cameras.