If you are familiar with the
Action Chains plugin, you can use it to achieve what you want:
- Add this custom action (Action chains > manage modules > create module > copy paste the action)
- Make a chain and add the action created above. You can configure the settings for generate cover by pressing the settings button next to the action.
- You can make multiple copies of the chain above (using the copy button in the create chains dialog), and change the settings for each copy to suit your purposes.