Following is the guidelines to send your requirements

• Start capturing our screenshots and add notes on it, so that you could better explain
• Write the additional fields required in the vouchers. Example, Payment voucher needs an additional reference field
• If a new report is required, write the functionality of the new report, and the calculations for the new report. Use an excel sheet to explain us better
• If you need improvement in the existing reports, mention the columns and the calculations
• Write the printing changes required for the new functionality or for the new fields
• If you need a different workflow, please mention the steps from screen to screen. Feel free to capture the screens and annotate the screens with a red marks
• If you have existing examples from you existing software, please send the screen shots, so that we can better understand them
• Write in steps, instead of big paragraph