So we have a project that will follow a certain baseline flow. 

This project will be run in 6 different countries.

There's a baseline skeleton they all will follow, e.g. a "Customers" module, and a "Meetings" modules which our sales staff creates with the staff member.

A lot of the overall template will be the same.

However each country has different requirements in terms of number of fields, which ones should be mandatory, in some cases even a minorly different workflow.

So we basically want to set up a singular system (so it's still simple to make some changes without needing to change 6 different Zoho set-ups), but we want it to be adaptable to match the set-up needed in different countries.

What would be our best way of going about this?