Closing Jira tickets


I’m working on the application-feedback-form XWiki Contrib extension. I fixed a bunch of tickets and need to close them on JIRA.

It seems I’m failing to find out how to do this. Is there some workflow I need to follow, like associate these tickets to releases and they will be closes when these releases are actually released, or am I missing some rights? Or am I just missing the obvious GUI element in JIRA letting me close tickets?

My username is rjakse.

Looks like this one. I think the logic is that issues are supposed to be closed by whoever is the lead of the project or have enough right to release the project. The lead seems to be @mouhb right now, but not sure if he is still active on it.