[Trisquel-users] Using same BackInTime folder for multiple users ?

[teodorescup]

Hy, I have a problem with using the same backintime folder for 2 users  
(desktop+laptop).
Both have the same user name [all thou it should not count], but one dose not  
recognize the other's backup folders.
Also, I want to mention that for root it detects the folders properly, even  
thou there are made on different systems (with different system names).

Any ideas how I can trick backintime to recognize the user folders on both  
machines ?