A new master may be created in 2 ways.
1.From Master Menu: Select the option from Master Data Management Menu to get Master entry Form. Enter data in respective field in master entry form. For example please go through Account Ledger, Product Master, Customer Master and Sales Person Master.
2.During Voucher entry: You may also create respective master during voucher entry. If, during voucher entry, you find that the master is yet to be created (the desired master is not found in the drop down list of existing masters), press CTRL + N in the respective master selection field, to get the Master entry Form. Enter data in respective field in maser entry Form.
On completion of Master entry, you get back to the voucher entry form to continue the current voucher entry.