Change in VAT period

Hello,

My financial period runs from November to October, but my VAT quarterly filing period begins from Dec to Nov.

I have 2 questions

1. Under taxes > Edit Settings - I was able to change my VAT calculation period to begin from December. But under ‘Accounts and settings’. Advanced – Accounting – Why is there no option to choose the First month of the tax year? Unlike with Desktop Premier, I was easily able to select my tax year period. Please note – I’m currently doing a test on QuickBooks online, so my MTD is not switched ‘ON’,
2. With Intuit discounting desktop premier effect Jan 2023 – I’m trying to migrate the data to Ouickbooks online. The question I had is about the VAT period. I have filed Dec – Feb and Mar – May VAT returns in Desktop Premier using MTD. With my VAT date beginning in Dec, - how do I display the current VAT period of Jun through Aug?

Any help or suggestions would be helpful. Please refer attached snapshot…

Thanks

Chris