how can i add an absence

good morning experts

I would like to know how you can support me in this question. I want to add an absence, for example, Maternity, but let it be added.
I took it from 03/01/2022 to 03/15/2022 for 14 days and then I asked for 04/01/2022 to 04/14/2022 for 13 days and this added up would have 27 days

the limit would be 30 of the absence and you could not ask for more than 3, this can be done in a quick formula or how you can do this type of rules in absences.

I hope you can give me your best advice

Atte

moises