SLA Monitoring for JIRA app give you the possibility to add one or more working calendar (I. Configure a working calendar)

The configuration of the SLA has to be assigned to a working calendar

Click on the tab 'Planning', to assign a calendar of the working day to the SLA 

Assign a working calendar

1. Choose a calendar from the list of the calendars that are created in the part (I. Configure a working calendar)
2. Save the assignment by clicking on the buton 'Done' . Else, click on the buton 'Cancel' , to cancel the assignment .

To choose a configure a Scheduler  , click on the tab 'Scheduler'