Click on the actions item in the left sidebar to enter the Actions listing.
You will see a list of all of the actions on your Impact Stack.
You can search for your actions with the search bar on the top right.
You can sort those by title, tag or language.
You can see how many submissions each action has had.
Click the Edit button to quickly edit the Action. I you click the little down arrow to the right of the Edit, you can copy and delete an individual action.