Another dashboard for additional company (-ies)

Hello,
I am an absolute newbie here and would like to ask somebody to assist me kindly to make another dashboard (or - other dashboards) for additional company (or - additional companies)- e.g., separate accounts for job, blogs, private use etc.
Certainly, it should be possible somehow but, unfortunately, I am not able to find the right place to do it ...
Thanking in advance
Iveta

You should have a look in the administration section, then click in the client tab,
where you can add new clients and set permissions for what projects they are authorized to see, if they can edit the files etc.

See this screenshot for details.

I hope that's what you're looking for.