First
The name pair will be your identification and needs to be unique. The location pair points to your Intermediate Manifest. Use a JSON checker to verify your submission. An example is:
{ "name": "dman2306", "location": "https://raw.githubusercontent.com/dcmeglio/hubitat-packages/master/repository.json" },
Finish
You will submit a Pull Request to the Master Manifest repository with a JSON snippet that will get merged into the current repository.