Backup feature (in NS Premium with Backup) should run under ANY user account

I have NS Premium (which includes backup of up to 25 GB to the Norton cloud storage).

On my child's Windows 10 machine I configured a backup set from the Admin account to back up his programming and music projects. But then I noticed that no backup takes place while he is logged in under his account (which is a Regular User account, i.e. non-Admin).

I chatted online with a Norton support rep and he told me that the backup actually happens only while a user is logged in using an Admin account, and recommended that I give my child account full Admin privileges. I find it pretty incredible that a security company support tech recommends that a user runs on a regular basis under an Admin account (that goes against all basic security practices I've heard), an even more so, that a child should actually be given Admin privileges!

Regardless:

1) Norton, please implement the backup so that it works no matter what user is logged in on the machine (better yet, even if NO user is logged on to the machine, e.g. run under built-in System account). I can accept that the config of a backup is restricted to an Admin account, but once configed, the backup should be able to run even when non-admins are logged on. Requiring that a user runs casually as Admin only to have the backup work is VERY UNPROFESSIONAL, especially coming from a security company! As is, the backup is essentially unusable. Very disappointed.

2) Anybody: I need a solution to this, please. Any suggestions are appreciated.