Bikal when we set a proxy at https://steemit.com/~witnesses the account we enter makes all of our witness votes for us. Setting a proxy is the easiest way to fully participate in the witness voting process if we choose a person using all witness votes. I am making 30 witness votes today which means setting me as your proxy makes all 30 of those votes automatically. As I change my votes, the votes for you automatically change too. Setting a proxy can be undone at any time. The downside of setting a proxy is that it handles all votes meaning the proxy either chooses everything or we have to set all of our own votes!