...

We also show the issue on the Calendar if any worklog was made for this issue that day (read more in Time Tracking section of this documentation)

Navigation on calendar

To move one month forward/backward you can use the following navigation

...

Click also on “This month“ to scroll to today.

Time Tracking

If time tracking is enabled Calendar view will show all worklog made as “clock“ icon. Once you put a mouse of it you will see the details about time logged specific date plus comment as well as total time logged for the issue.

...

For more details about Worklog go to Time Tracking section of this documentation.

Quick filters

You can fine tune your Roadmap view via Quick filters. To create one just specify a custom JQL you like and name it.

...

All created filters could be reused in Gadgets.