How to turn off background operation

While shutting down, I got the wait for up to 2 minutes message for the first time in ages (using 2017 version.)

On the True Image screen's "Backup" tab, the "Next backup" field is "Not scheduled."  

So, who's doing the backup and how do I disable it?

The biggest pain in the neck about this program is that it seems to insist on installing itself to start a boot time.

We don't need any services except those provided by the Desktop app when we manually start a backup. We're not doing incremental or scheduled backups.

Is the 2019 version better behaved in this regard?