Im sorry if something similar is asked elsewhere, with a quick search I couldn't find the answer.
This could get long so I'll try to split it into a broad overview of what I'm trying to do and the specific question I have:
Broad Aim:
At my organization, we use Microsoft for pretty much everything. I.e. Teams/Power Bi/Outlook/etc...
Previously, I've connected Power Bi to Redcap using the API, looks like this:

Well, my colleague and I have a public facing redcap survey setup for people in our organization to place "tickets" with us. They need tech support, etc... place a ticket. It creates a redcap record and we can go look at it.
Separately, we also use MS Teams and it's built in tasks and planner to keep track of things we're working on. Looks like this:

Well, I'm starting to dig into the possibility of combining the two. Namely, if someone placed a ticket in Redcap, using the redcap API to port that over to Teams.
There's going to be a LOT of things to figure out about this, more than this question will allow, but for now I'm trying to figure out one thing.
My specific Question:
I'm struggling with the http request in MS Flow. Here are the options:

I've no idea what to plug in where. I see in the Redcap API playground it mentions POST here:

But not sure how I plug that in. Any ideas or experience?
Obviously they'll be steps to do AFTER I connect such as parsing the results etc... but those would be for a different question. For now I just want to connect.