hi @Alcium,
Most of the info you need can be found in the Dataverse tables :
-Project
-Work Template
-User
-Organizational Unit
using the power automate create new row(project)
project - table where Project data is stored
calendar id - i'm not 100% sure about this one but I think if you copy a calendar id from the project table in the dataverse it allows power automate to work ( when power automate runs the flow it will insert a unique calendar id)
Contracting Unit - access Organizational Unit table within dataverse switch to data and change the view to all then copy the the item in the Organizational Unit (should start something like this f34006c4-) and paste it between the brackets msdyn_projects( )
Name - unique name for the project
project manager - access the user table and copy your user (should start something like this 9b420ca0-)and again paste it between the brackets msdyn_projects( )
Work Hour Template - access the dataverse table work template copy work template (should start something like this fa4006c4-) and paste between the brackets
when you run this is power automate it should create a blank project

Hope this helps 🙂