How Do You Transition From One Sight to Many Other Sights?

When did you know it was time to transition from one sight into many other sights? Because i th ethic alogicall have that question, like, my first sight is at a point where it's doing well. And they start thinking through, should i start another sight, or should i end that time in that money and energy on the same first sight I have? So i'm curious to hear how you made those decisions.