Change calendar for Jira Service Management

With the introduction of ITSM customers wish to have a change calendar that shows changes that are planned over a coming period of time. Customers would like to be able to map the planned start and end times of the change on the calendar, so that they can see where teams might be overlapping.
Currently, there is an add-on Calendar for Jira - Plan Team Activities that provides this functionality, however, we would like this natively built-in with Jira Service management.