It is possible with the following options:
-Media pool > create media set for each backup session
-Job schedule > Run job daily at these days > Friday
-Specify the desired retention (at least one week)
Now once you want to archive a monthly set of tapes with backups – use protect option on the last media set, and such tapes won’t be overwritten by retention. When no longer needed, bring this tapes back to the library and unprotect them – it will be erased and used by the original media pool for further backups.