Well if possible have them in the same project folder
To locate the project folder of that workflow, we got an option in STUDIO itself
Click on Project panel in the left side of the studio screen
Click on Open Folder icon in it and it will take you to the project folder of that workflow
Keep all the xaml files you had developed and invoke the same inside the studio so that calling a xaml won’t be a problem
And for this
You can ignore that step if you installed studio and robot in your machine already
And make sure robot is connected to orchestrator as per this doc
And on this note
Make sure you have followed all these steps as mentioned in below post so that when you run from orchestrator it will run in your machine in unattended mode
And finally
Check once how invoke workflow file activity works
I could see there are some arguments to imported in that activity that’s why it shows import arguments in orange color