Offset Real Time Data Based On Validation List

What I have:

I have 12 months in a year and each number represent a month. I have generated lists of data mainly interest and principle payments from 12 amortization sheets which i have just copied into the attached spreadsheet and will change accordingly based on the loan terms which doesn concern us. For our purposes we wont make distintion between principle and payment as i just need to see how to make what i need work.

What I need:
I need to offset data vertically automatically once i the user selects an option value (Number in this Case) from the validation list located within the Payment control box. Going from left to right you see the raw data but in this example i need the data on the right hand side to be offset down the number of rows which may be found in the control box as a validation list.

IE:

So if i were to use "Loan I" [L6] and select a "2"[J6] from the "Payment Control" then the data on the right hand side [L6[ would reflect a $0 but instead the new value for L7 would be "$24.96" and would continue down for about 374 rows. This will have to be done for Loans I - Loans N [L6:Q6] respectively. This is all i need in order to compile and make use of in my spreadsheets.

Thanks and cannot be a formula as forumlas will be overwritten and cannot be a macro so it must be a module in itself so it an run when the list is changed.

the single digit values in coulmns M6:Q3 are there mainly so you can see the difference between the base and the position at which the data is placed at. its not need but is there to stress and to show the number rows in offset of data.