How to add to an email rule

I have a couple of email rules created several OS generations ago that I have lost the ability to add to easily. For example, one rule deletes emails from certain senders, more specifically, if the "from" field contains certain values. Now when I get an email from a sender and I never want to be bothered with mail from that sender again, how can I easily add that sender to my "delete" rule, which I recall that I use to be able to do. Yes, I suppose I could copy the sender's address, open rules, select the rule in question, and then modify it by adding this sender to the list that is there. But I was hoping for something I could do with just a few clicks.

Any suggestions?