I have a few updates. I found what I was looking for.
Create online meetings ie Microsoft Teams URLs via API documentation is here:
Using this in UiPath is here:
https://raw.githubusercontent.com/microsoftgraph/microsoftgraph-postman-collections/master/Microsoft%20Graph.postman_collection.json
However, once I generate a User Access Token, the same token fails to authenticate in UiPath, but when I do the same in Postman, it works fine, which leads me to believe it’s a matter of headers/parameters. Not sure what I’m missing but continuing to troubleshoot. So far I can use the HTTP activity in UiPath to generate the bearer token but passing this token through for the next POST call, I keep getting 401 error. And yes, passing the token takes a bit of string manipulation.
For troubleshooting, I generated the token in Postman and passed the token through the POST create online meeting call and it fails but works in Postman. If you have observed anything different, please let me know.