Client has multiple physical locations - sense checking this is the correct approach.

I’m building a site for a client who has several (35+) branches throughout the UK.

Head office needs control over everything, but I also want each branch to have their own login, and be able to post content relevant to their local branch.

At the moment, I’m thinking I’ll need to create a separate channel for each branch, so that I can create a login for each one. I don’t want them to be able to post content on each others areas.

I feel that there must be a better way, so that I don’t have to alter 35+ channels each time I need to change something.

Any ideas?