Go to Calendar add-on → Add Calendar → Create new
In opened dialog enter the name of calendar, select one of three possible conditions for issues to be displayed, color and text color.
|Project||Select a project from dropdown list below. The issues will be displayed in the calendar only from this project.|
|Saved filters||Select saved filter from dropdown list below. These are saved filters that user created in JIRA issues search. Only issues from the filter search results can be added and displayed in the calendar.|
|JQL (Advanced)||Type in a JQL in the field below. Only issues according to the JQL results can be added and displayed in the calendar.|
Notice that the issues will be displayed in the calendar to the users accordingly user's permissions.