Webshots can use built in Webshots screen saver or the native screen saver on macOS.

(For the native screen saver, see the next faq.)

To configure this:

1. Turn the native screen saver off by selecting "Never" under "Start Screen Saver when inactive" in the Lock Screen Panel of System Settings.
2. Go to Settings->Screen Saver
3. Under "Show Screen Saver after idle for", select an idle time after which the screen saver will start.

You can also change effect, pause and other settings.