In PaintShop Pro, actions are called scripts. Scripts are like mini-programs that will automatically apply a series of effects or adjustments to your photos.
Scripts are run from the Script toolbar, which you can open by going to View > Toolbars > Script.
All you need to do is choose the script you want and click the Run button.
PaintShop Pro includes a number of scripts that are already installed. To get more scripts, go to the Welcome Screen, click Get More, and filter the list to show only Scripts.
Learn more about using scripts in this full tutorial How to Use Scripts.
You can also find the PaintShop Pro Q&A video here on the Discovery Center, where we answer more questions submitted by PaintShop Pro users.