I have started using Jira just recently and I am having trouble with the Issue Navigator. I want to filter the issues so that the list shows only those that were closed by a
Sorry, but the answer from Daria Trainor is not correct. You find Issues, where the status is closed and one of the transistions where made by the "username"
The correct one have to be:
status was closed BY 'username'
also possible:
status changed to Closed BY 'username'
then you also find issues, in a differnt state
if your workflow is more complex you can also limit like this:
status changed FROM Resolved to Closed BY 'username'