Schedule Windows Server Backup arbitrarily
When you create a backup schedule with Windows Server Backup, you can take up to one day of backup intervals, as shown in the figure. If you don't want to back up frequently, you'd like to specify it on a weekly or monthly basis, but unfortunately that's not possible here.
In fact, the schedule for registering Windows Server Backup is set in task scheduler. This means that you can change the schedule freely if you change the settings there.
Run the Task Scheduler and change it directly because "Microsoft-Windows-Windows-WindowsBackup" is created in "Microsoft" - "Windows" - "Backup".
For example, if you want to run it on a weekly basis, set it as shown in the figure.
As an aside, this schedule is updated when you schedule it in Windows Server Backup, so you need to reconfigure it because you can change the schedule settings, for example, just change the backup target and the task scheduler settings will be restored.