Is it possible to add holidays and weekends to the system?

Question

JIRA

Is it possible to add holidays and weekends (January 01, etc.) to the system in such a way that they are taken into account when calculating, for example, parameters such as {{BusinessDays(5)}}?
Just now, when you try to set the value of any date field, as the current number + BuisnessDays (5), the system, when counting, throws out only Saturday and Sunday.

Answer 1

Some plugins support their calendars. For example JWT.
They can be used to put values ​​into fields.
Holidays can also be added to ServiceDesk to be taken into account in the SLA.