Basic set up and questions

I would like to schedule a backup. I have a PC with 2 drives, one for Windows and software, and another with data. I want to back up the drive with data. I’m using the web GUI.

I see there are different types of jobs other than “backup” to add: prune, check, copy. What jobs should I set up? Prune and check?

Can I schedule the backup to run monthly with the GUI?

My next question is just out of curiosity about the algorithms: does the software recognize when two different chunks have the same hash?