Adding servers to existing discovery with REST API

Hello,

 

I have read through all available white papers on the REST API, The Dell GitHub and searched through the forum.   

 

I am able to add a discovery group through a script using a POST to /api/DiscoveryConfigService/DiscoveryConfigGroups

I also am able to overwrite the devices by listing a different NetworkAddressDetail and using a PUT method to /api/DiscoveryConfigService/DiscoveryConfigGroups(1)

However, I am trying to keep the existing addresses, and add more.   To note, I have not figured out how to get what devices are in a discovery, it may be as simple and getting that to a variable and adding new and replacing.

Thanks for any info.