Hi,
welcome to the vCO community (the best community around here 
!! )
It is not as easy as I could present you a solution within one post here 
First you have to search the VmFolder Object by name and also all the other input you need to provision a virtual machine. I built you two sample actions to search a VmFolder and a Datastore by name which I couldn't upload at the moment 
I will send them to you by message.
If you have all the Objects you need, you could provision your virtual machine. You could find here some threads where you will find examples of how to.
If you need more help, we should know some more information about your provisioning. Do you use Storage DRS? Do you provision VMs by cloning a template or build them from scratch Do you use customization specifications? And so one. Cause you need other Orchestrator Actions and Workflows to get this running.
But don't loose your head, it isn't as complicated as it sounds!
Regards
Chris