How to prevent sleep on Windows 11 client?

Hi,
After a long search for a reliable, open-source, cross-platform backup program that supports image backups, I finally stumbled across UrBackup. So far everything works great, except one thing. The Windows client won’t prevent Windows from sleep, this causes the backup to pause and resume after manually waking the PC up again, which is very suboptimal for a reliable backup process. How can I prevent Windows from going to sleep? Are there any settings in the client or in Windows for that?

Thank you in advance