This article is about detail set up calculation, but you can also read How To Create Calculation in general.
General
In section General check the Financing product and Dates - Offer Creation Date, Offer Validity Date, Calculation Starting Date, Expected Termination Date. The Financing Product has impact to the calculation method:
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Gen. Bus. Posting Group and Gen. Prod. Posting Group - the system post regular invoices according to these selected posting groups.
Note:
To post regurely invoices use:
Manually - for separately posting - use menu Process - Payment Calendar and click to the button Post. You can not skip the payments to be posted. It must be posted consecutively.
Massive - To post all invoices for Loans filtred by selected parameters - use Action menu Processing - Finance Payment Posting - Posting in main system page.