Is there a way for someone not on a team to message a team

Is there a way for someone not on a team to message a team

So i set up a "team" in cliq - Office staff - all three people who work in our office

is there a way a field tech can message the Office Staff "team" or will they need to just add all three of us to a chat?
Like if they need directions, the first one of us to be free can get it to them

Thanks