Here are some Postman collections to start with working with the Cisco HyperFlex APIs. The collections are arranged in directories.
For an introduction of HyperFlex APIs goto: https://www.youtube.com/watch?v=l5Fwmyb8pgM&t=179s
How to manage your datastores via APIs?
With those APIs you can create, change and delete datastores.
Guidance of steps are in the directory.