RE: Negative deduction for Annual leave
Hi HCM,
I have tried to explain a scenario as I believe this is what you need.
Please let me know if this is what you are expecting.
Step 1: In the leave accrual plan, make sure to set the minimum balance to a negative amount:

Step 2: The employee will now be able to request leave, higher then his available balance:

Step 3: Once the leave is approved, the balance will become negative:

Step 4: After the accrual (1 month later) the balance will become positive again (due to accrued new amount):

Please let me know if this is the same (or similair) scenario.
With regards & please reach out in case of questions,