How to create a restaurant in The Sims 4

After entering the game, go to the "Manage World" mode and find the restaurant that comes with the game in "My Database".

Or enter your own home and find someone to open it. On the far right side of the lower right corner, just choose to open a store.

Then find an open space and put the restaurant up there, and then go back to the game.

Then you can go to the restaurant to select employees, design the menu, and everything else is automatic.