When finalizing an agreement that have spaces that are already rented in different agreements, a notification on overlapping is shown.
The notification lists the overlapping spaces and shows in which agreement/building/floor/revision the space is.
...
If all listed spaces are supposed to be rented in multiple agreements, click ‘Accept overlapping spaces’ and continue the finalization process.
...
You can also edit an agreement that has already been signed and accepted.
...