Note: Mailing addresses are stored on the owner record, not on the unit. The unit address always remains the physical address of the unit.
Step 1: Go to the "People" tab in the left navigation.
Step 2: Click the three dots in the "actions" column next to the person you want to add a mailing address for.
Step 3: Select "Edit" from the drop-down.
Step 4: Scroll down to "mailing address" to input the information.