I need to configure JIRA automatically assign an issue to the user when one of the fields is changed to the scientific value ('confirmed').
As I know it is possible to trigger a transition if a specific field has been filled in using separate add-on:
http://blog.valiantys.com/en/jira-en/automation-update-jira-issues-automaticall
and then auto assign user on the issue transition.
Is there any way to perform it without add-ons?
The user must be chosen from the list of users based on the calendar (and probably it is the most complicated part).
For example:
1) if an issue is created/transitioned from 08:00 till 16:00 on working day (Monday-Friday) it should be automatically assigned to user, in another case it should be assigned to the group.
2) if the issue is created on Monday it should be assigned to user 'John';
if the issue is created on Tuesday it should be assigned to user 'Will';