1000% use a different number. When I first signed up for Jobber, I used their number as the business line. It can route directly to your phone anyway but this way texts at least can live in one place.
What I started to do when I decoupled my personal line is I would just start texting them from the other number when communicating and make sure I tell them this is the business line and to direct all comms there. Say it's so you can get things organized (which is true). Then you can turn Jobber notifications off after a certain time of day.
One thing I will mention though is Jobber doesn't own their phone numbers so if you ever wanted to use that number on another platform for communication (like a platform specific to client communication) you won't be able to port it over. That being said, I still use jobbers number for appointment reminders, quotes, invoices etc and I kind of like it for that stuff then all client comms go through Go High Level.
Go High Level is really good and customizable for managing comms and you can do that with your team so I would recommend that. I was using Chiirp for years and it does have a lot of capability but it's really hard to navigate and I don't really like their support team.
For your team, you need to map out the customer journey and delegate the specific stages to whoever would be best to handle them.
