Standard vs Priority or Super Priority Processing - ILR SET(M)

Sorry if this is a stupid question!

I am to the point of submitting the SET(M) application online and it only has the option for: "Select a service from the options below. You will not be able to change this after you have submitted your application and auto-selects Standard service : pay 2408.20 GBP, most people get a decision within 6 months of submitting their on-line application".

Is this the part where I need to check online at midnight to see if they provide an option for Priority or Super Priority on a different day? Or do I select the default standard service here and get the  ability to add on Priority or Super Priority when booking the actual biometrics appointment?

Many thanks for your help.

This is the only point at which you can purchase Super Priority processing, so if you select Standard and continue on to the payment, you will not be able to use Super Priority at all and could be waiting up to 6 months.

So, in order to purchase Super Priority, don't submit or pay for anything now, and instead, you'll need to keep checking at midnight... and if/when it is available, it will give you the option to choose between Standard and Super Priority processing before paying for the visa.

Thank you so much