one origin account but multiple users for Sims 4

[jlewis0330]

I have one computer and one origin account. There is 3 people in the house that wants to play the Sims4. Is there anyway to have multiple players with the one sims game? Do we have to go out and buy multiple computers with different origin accounts. When one person is playing with their family, the other person family is running simultaneously so you lose the spot where you saved the game.