Negative Annual leave

I'm a student and learning MYOB as one of my assigments

In this assessment i had to create a company and set up a payroll , employee cards, and process payroll. 

For this assessment no opening balance is to be entered or provided for the employees.  So all employee has zero balance for entitlements. 

One of the timesheets  shows that one employee has taken annual leave. Since all employees in this company starts of with zero amount of Annual leave i expect the system will tell me that this employee will go into negative amount.  

My question is "is there any extra step i need to do with the negative AL"? Do i simply let MYOB record a negative amount AL 

Many thanks