How do you keep it fun AND professional?

I am curious how other owners handle the line between being friendly with their crew and staying professional as the boss. In this kind of work we spend a lot of time with technicians driving to jobs working side by side and solving problems together so naturally there is a lot of joking around and a relaxed environment. At the same time there are moments where you need to switch gears stay focused and have direct conversations about expectations.

One situation that came up recently made me think about this more. We have someone on our team in more of a management role. He is a good guy and very capable but sometimes he jokes around in situations where we are trying to stay focused and move the job forward. We also had a situation where instead of having the technician communicate with the client he jumped into a group text and started messaging the client directly which broke the chain of communication we try to maintain. It got me thinking about what kind of guardrails other companies put in place both for themselves and for people in leadership roles.

Do you hang out with your crew outside of work or do you keep a clear boundary between work and personal life. And if you have lead techs or managers do you have specific expectations for how they communicate with clients and interact with the rest of the crew. I am curious what has worked well for others.