Sitcoms are typically set in a limited location like a home or workplace to keep production costs low. They feature a small group of main characters stuck in an ongoing situation or dysfunctional relationship that is the source of comedy each episode, like being part of a family. Plots revolve around everyday problems and misunderstandings rather than life-threatening crises. This format allows characters and situations to remain largely unchanged from episode to episode, keeping the show familiar and affordable to produce repeatedly.