When guests are over, one should be the best version on themselves they possible could. For example, they should be polite; offer them water or place their bags and coats down. Another example would be, keep them entertained; play a board game, video game, watch a movie, or simply, talk about each other’s days. Lastly, one should use proper grammar, especially if they’re important guests. There are numerous amount of ways people should behave with guests, but I hope that helps :)