We have a leave policy that if some employee didn't take all its annual vacations, its remaining balance will be transferred to then next year.
e.g. One employee has 5 days balance previous year, so when we allocate annual vacations at the beginning of next year his balance should be 22 + 5 = 27. Annual vacations for an employee are 22.
How we can achieve it and work around?
Leaves App and Odoo 12.