Go to Gateway of Tally > Display > List of Accounts > Ctrl+V [Voucher Types]
Or
Go to Gateway of Tally > Accounts info / Inventory Info > Voucher types > Alter
Even if you do not need extra voucher types, you would normally alter the predefined voucher types to customise them according to your needs, e.g., to control their numbers.
Go to Gateway of Tally > Accounts info / Inventory Info > Voucher types > Alter
'Pre-defined Voucher Types in Tally.ERP' has been shared with