You need to enable SimplePolicy in your Admin Panel -> expand Settings -> MRF. Type Simple in the top bar and select SimplePolicy, then click save.
Then you add instances from there. However, I would highly recommend you personally vet any actions rather than trust a list maker. Everyone that provides a list has an agenda and it may not be compatible with your own.
Edit: As a side note, I also recommend NormalizeMarkup and AntiLinkSpamPolicy. I also conditionally recommend AntiHellTheadPolicy