How do i create Inventory categories?

Previously, i created some workflows that talk to an API using a powershell module.

Now, I'm working to integrate it directly with the Rest API instead of using the powershell module like a middle man.

I'd like to create workflows like

Add a TypeX backup server

Remove a TypeX backup server

and then the result of that workflow is in the Inventory under TypeX. So under TypeX, it would have the name(s) of the backup servers and also credentials to access the backup server Rest APi.

Is that possible to do or do i have to be a developer of some kind to do that?

Eventually, I want to create a library of workflows that work with product TypeX that can simply be imported like a package or even as a plugin.

thanks!