Hi Deepak,
this is quite straightforward - you can use e.g. Product type 55A (Product category - 550 - Interest rate instrument) and in a tab 'Structure' in a field group 'Repayment structure' choose '2 - Installment repayment' and specify an installment amount (in your case 2500$) and also frequency of the installment repayment (like 6 months in your case).
of course, you have to verify that relevant Condition types are correctly defined in Customizing.
Kind regards,
Renatas