From the Kawak human management module, you can configure the leave or vacation period, where the field for calculating the period you have been with the company is automatic and is not manual, allowing the module manager to have greater control over vacation periods so that he can execute his pending assignments during that period.

Also allow general alerts for people who are about to expire their vacation period.

The age field should be calculated automatically, since it must be linked to the employee's date of birth.