System actions allow you to execute system commands on your computer quickly. You can mark the most used actions as favorites, and the app will show the list of favorites instead of the complete list by default.
You can execute Shortcuts commands on your computer by selecting them from this list (only on macOS).
Custom actions allow you to add your custom actions written in AppleScript for Mac or using PowerShell for Windows. Add custom action in the helper app on your computer to see it here.
An easy way to open web pages on your computer is to add them here instead of typing their address every time.
Review and cancel scheduled actions using this view.
Siri Shortcuts & Timer
You can use Siri Shortcuts or Timer to execute actions.