split level floor plan

[htlmv]

got a project where a building has 2 'levels'. client taking over multiple spaces but there is a 4' floor change. left side of the building is at 0'-0" while the right is at -4'-0". i figured I can show all in 1 view but the windows/doors become an issue as per the cut plane. I created an upper level and a lower level.
is there a proper way to 'combine' the 2 levels on the sheet?

thanks.

[htlmv]

nevermind....found how to do it....plan regions.