NOTE: Room Layouts are stored at the 'Global' level and are not unique to each Event.
STEP 1: Go to Functions > click 'Room Layouts' under the 'Settings' header:
STEP 1: Go to Functions > click 'Room Layouts' under the 'Settings' header:
STEP 2: Click on the Room Layout Name you want to edit:
STEP 3: Edit the room layout information and click 'Save'
NOTE: this screen refers to "Lookup Values" because you can also access these settings under 'Settings' > 'Lists'