Update Windows 10 to Creators Update using BigFix

We are using BigFix to update to Windows 10 Creators Update (1703). Currently we do all our patching through BigFix.

I have created a custom repository and downloading the ISO to it, but from there I cannot find any documentation on using the custom repository. Is there some documentation that can point me to what I need to do? We started our Windows 10 deployments with 1607, so this is the first time we encountering a major “feature” update (Creators Update).