Can we have more folder options like custom folders or sub-folders to add to Computer Backup?

A bit difficult to say whether I am on Backup Beta or not... Either way, if I understood correctly, and its not easy, I sort of need to first enable any backup in order to turn the Beta version on? Well thats difficult, because my Dropbox folder is not on the C drive, thus, it seems this is a closed circle.

When I click to look for more folders, there is no "Browse" dialog or anything- just a list of random folders from the User folder.

Was stupid of me to get my hopes up for this feature after getting the email lol.