How to use REV REC START DATE SOURCE

Hi Guru and everyone.

Please let me ask you about how to let NS start revenue recognition from the date which I set specifically on sales order or invoice.

Here is example about what I want to do.

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Sales order: the date is 1 September.

Invoice: the date is also 1 September.

The amount is $900 and the period is three month.

I want to grasp as below. I set the date 1 November then make it start from 1 November instead of September.

>>November $300

>>December $300

>>January $300

I want to start it after two or N months later instead of this month.

I know about PERIOD OFFSET in recognition rule to make it later for some period. However it is sometime next month later and three months later. It changes based on the situation so I want to set it every time for some item.