Trib Total Media TV writer Rob Owen offers a viewing tip for the coming week. The 2020-21 TV season’s first new scripted comedy, CBS’s “B Positive,” debuts this week and it’s very much a CBS comedy.

NEW YORK — CBS will bring two comedies to its schedule on Wednesday nights in the fall, spreading jokes to a second night after confining its sitcoms to Mondays the past few years. Emmy winner Julia ...