When did SNL start having the hosts in their sketches?

I have reviewed the transcripts for the second episode hosted by Paul Simon (October 18, 1975) and he does do a few songs, but does appear in The Bees skit announcing that it's been cut since it didn't do well the previous week. Later he appears in a bit shown during the Weekend Update with Chevy Chase. It has Marv Alpert reporting while Paul Simon is shown going head-to-head with Connie Hawkins on a basketball court. That would constitute as appearing in more than just a musical number.