Where to change effective dates for voucher in tally erp 9

This is a video tutorial on what is effective date in tally erp 9, how to change effective date, what is the use of effective date etc.
https://tallygame.com/tally-erp-9/accounting-voucher/use-effective-dates-for-vouchers-what-the-use-of-it-tally-erp9/