The system will cater for having length of service in months, as well as years.
To set your length of service in months, follow the below steps:
Click Settings then click System Settings.
Click Module Settings then click HR.
Click Holiday Entitlement then click on Add Holiday Entitlement.
Give the entitlement a name, then select whether the holiday entitlement is in days or hours.
Select Length of Service checkbox.
A drop-down box will appear with two options: Years and Months.
Select Months then click on Add Length of Service.
In the Entitlement field, enter the number of hours the employee will start with, along with month 0.
Click Add Length of Service again to add more increments as needed.
Navigate to Global Settings through your system settings.
Search for Holiday Entitlement: Full Year and turn this Off to ensure the length of service in months is accurate.