My goal is to upload a server only add-on (JAR file) which I got from the Atlassian Marketplace. I am following this guide: https://innovalog.atlassian.net/wiki/spaces/JMWE/pages/72712230/Installing+the+add-on+on+your+Jira+server#Installingtheadd-ononyourJiraserver-InstallingwithinJira(Recommended)
Under Installing from the Atlassian Marketplace, step 6 says to locate "Add-on" from the menu and click on it. But I can't see any "add-on" item in the menu list. See image for reference. Btw, I have administrator rights.
I tried clicking Apps but it doesn't give me the option to upload an add-on file.