Microsoft says that you can define the Rings in Group Policy. Sadly this is NOT completely accurate. Here is what you can do:

• If you are in the Production ring (18.06x) and you want to go to the Enterprise ring (18.025.x). 

• You add the registry setting as they say here: 

https://support.office.com/en-us/article/use-group-policy-to-control-onedrive-sync-client-settings-0ecb2cf5-8882-42b3-a6e9-be6bda30899c?ui=en-US&rs=en-US&ad=US#enableenterpriseupdate
Section: “Delay updating OneDrive.exe until the second release wave”.

• You will not be able to change your version until the Enterprise ring gets a version higher then the one you already have. Which means you will have to wait around 60 days…

Please add the ability to go from one to the other when we want just like its available for Office 365 Click to Run.