Google Non profit outlook development

We are requiring some support with the integration of a Google nonprofit accreditation for our email system. Last year we were lucky enough to be awarded Google nonprofit and we're looking for someone to help us set up and integrate our two existing email accounts as well as showing us how we can set up an additional four new accounts.

Currently, our Office Outlook is being administrated by a third party Microsoft seller and we now want to make that transition over to Google nonprofit. It'd be really useful if you could show us how we could take advantage of all of the additional products that Google nonprofit has.

We're a long established charity for the last 15 years and we work building community supporting children and young people as well as older isolated adults. Any help would be really appreciated.