I need to unblock a Java add on that Firefox has blocked but there is no 'Enable' setting or option for me to choose whether to block or unblock it. Java is used by my company and blocking it is not an option.

Honestly I'm not that happy with Mozilla/Firefox about this in general, It's MY computer I get to decide what I run and don't run. Firefox not having the option for me to say 'Okay, you don't like it but I do so we're going to do it' is a major failure.