Here's how you can copy or duplicate your action cards:
Click to open the action card you want to copy
Select the 'More' menu on the top right
Select 'Duplicate action'
Specify the number of copies you would like and confirm you want to copy the action
This will automatically open the new copied action and show (copy) in the title. It will have all the same details as the action you copied it from. Change any details you want and press close.
Additionally, there is a shortcut! You may right-click on any action card icon and select 'Duplicate action'