Which plan can i use for using on circleCI?

Which account should I use to pull docker with circleCI in multiple github repositories?

The company I work for has multiple github private repositories,
each repositories pull docker image from dockerhub on circleCI.

If my company has 10 developers, must we register team plan?
Or is it okay to subscribe to only one pro plan and use multiple repositories with one account?

It would be helpful if you could get a reply.