Following clients' requests about logging approved vacation time to worklog, since version 2.2.x, new functionality enables to add used days/hours to approved vacation document's worklog. It can be turned on, or off by Jira administrator.
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Directly after following the above, you won't see "Time Tracking" section in your requests (like on the below image). Check on the bottom of this page under "Enabling or disabling saving used time to worklog" header, for more information how to enable it.
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After approving a requested leave by user's line manager, values present under "Time Tracking (1) section are populated, in accordance with settings of Jira time tracking if saving used time to worklog option is enabled:
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Saving used time to worklog, using Vacation's Manager user workweek scheme
If "Vacation Manager user workweek scheme" option is selected, when saving used time to worklog option is enabled, hours per day of chosen working hour scheme is used as a source for vacation types time tracking calculation. It is present under the same "Time Tracking" section of an issue, as in the above presented picture.
Enabling or disabling saving used time to worklog
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In case of edition of an already existing vacation type, correspondingly this option (1↓), option named the same needs to be ticked:
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When it is set correctly, then user's time of requested vacation automatically becomes filled and visible in an opened issue's "Time Tracking" section (1↓):
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