...
Before you fill out this tab make sure that all the vacation types applicable to this employment contract are defined on the HR and Payroll > See Also > Vacation Types form. For details, see Adding a Vacation type.
The "Employment contract Contract (create)" form. The Vacations tab
...
In the Business Activity column, you can specify the business activity associated with the expense on paid vacation.
Click the <> link in the GL Accounts column to select the corresponding account to be used for this accrual vacation - by default, it is the Accumulated Vacation Pay GL account..
...