Google plus business page + local pages

I was wondering what the proper way to go about SEO and setting up local pages on google plus. The business 5 locations, currently has all of these in verified listing on google plus. Should a main business page be made, and if so what address do you choose when the company is decentralized. Where should the content be posted on if there is no main page, or should it only be posted on the main page. What about reviews, each listing gets reviews, should the main one get them as well?
Please help, as I'm very confused about what to do. Thank you.

Bonch - All businesses have one main branch or office. In most cases, the address of the main office is the one being used on listings.

You're referring to your Google + page alone and not a website, right?

Google + alone yes.

If you have a Google Local pages (Google Places) for each of the 5 locations already then you may just want to set up a brand page. Think of it as how a business or brand, regardless of the number of locations, would have one Facebook page - hopefully that helps if make more sense. If the business has a main headquarters address, you can use that.

Hi,

If you are a lot of branches, I suggest you list them all in Google Plus. That will further help your market identify which branch is near to them. I would also suggest that you use sub pages for these location so you can use the links in each Google plus listing you make. If it helps, this is a really good tutorial on G+: http://newraycom.com/google-pages-ultimate-tutorial-by-gabriel-vasile/