In OnDemand Version of Jira:
How can a user reduce "logged work" if the user entered to much time (by accident)?
As fas as I see the Default Permission Scheme allows already:
"Delete Own Worklogs (Ability to delete own worklogs made on issues.) Project Role (Users)"
Here I found the instruction how this should work in theory:
https://confluence.atlassian.com/display/JIRA040/Logging+Work+on+an+Issue
--> But the described "work log" tab allows me still to add additional work time only.
How can the user reduce entered work log time?