JDE Payroll - Tax Override Screen vs Tax Method for non statutory workers

Hi community!

I have a question I would like to pose. I have a client that we interface Cloud HCM to JDE HR and Payroll. The payroll is processed in JDE. My question is the client has non statutory employees that do not have state taxes withheld during payroll and the employee is responsible to pay themselves.

We use integrations from Cloud data extracts and update all the pertinent tables in JDE. I would like to know if I keept the tax method blank on the P0801US  National and Fiscal Data - USA and use on the P060120 Employee Tax Override a value of '%' in Additional/Flat Tax1 (FT01) and a value of 'blank' Amount Withholding (AW01) would I get the same results as using a tax method of 3? Again, I ask as I would like to keep much of the tax changes/updates from the integration on the override screen and update the F06017 table