Drop a shell into the gun. Hit the latch to close. Shoot the single. Repeat for the second bird. Load two for doubles only. Take each shot as a seperate shot and do not miss.
Why load two shells when shooting singles? Load one and shoot one at a time.
Personally, I do not care how many you load at a time as long as you keep the gun pointed in a safe direction. A week does not go by that I do not see a shooter turning or starting to point a gun in a direction that is not down range. Many of them are well experienced shooter who know better but have become casual about things because they have shot for years and never ahd a problem. Novice shooters need a mild warning, old farts need a swift kick in the a--.