The Starting balance feature, found under the Settings tab, allows you to set up starting balances for all your accounts and subsidiary ledgers.
Many users prefer to establish their starting balances using journal entry however this can result in overly long journal entry. Also, starting balances do not involve debits and credits only. If you are using Inventory Items tab, then you might want to set up starting balances for Qty on hand, Qty to deliver, Qty to receive which are starting balances for management purposes, not accounting purposes.