Advice for Having something follow something else?

Hello, Unity forums. I've been having a bit of difficulty lately with a game I'm making. I'd like to have characters in your party follow the main character, similar to classic RPGs like Chrono Trigger and Earthbound. I've tried using Vector2.MoveTowards, which works fine other than the fact that it seems to be here and there as far as how smooth it moves (in other words, the character just kind of teleports around sometimes). Does anyone have any pointers as to how to go about doing this? Thanks in advance.