Most desks still split the book: an application in a folder, an EMI in Excel, a receipt in a day book. The overdue list is whoever remembered. That is fine until a review meeting asks who slipped, and nobody can open one account and answer.
The Loan Management System keeps each borrower, facility, and installment together. Staff record an application, disburse, and generate a schedule. Collections post against the installment that is actually due. Interest, charges, and receipts stay on the account. Reports cover portfolio, collections, and aging for the people who review the book.
This is not a consumer instant-loan app. Field-heavy group lending belongs in the Microfinance LMS. Unique interest or penalty rules are custom software, not a bent product.