A: Hi,
When you create a snapshot, you can revert the changes back to that point where/when you created it. But you won't be able to select a time in between unless you do a snapshots on the day in between. So, if you want to be able to revert to any day of the week, you will have to create daily snapshots. If you make just one per week, you will be able to revert to that one snapshot. I hope that makes sense :)

Also, please note that this is not a backup plugin. You can learn more about it here:
https://docs.wpreset.com/article/121-backup-plugin-video