You can't currently. This may be a new feature of the new forum though.
I'm bumping this thread because it really annoys me that there is no option to enable notifications when someone quotes you. This should be easy to implement and I don't understand why do we need to wait for "new forum".That's true, I believe that this feature should have been present in this forum ever since it was established since it is essential in keeping a conversation going on threads. It can be such a hassle to go through various pages (especially when you're awaiting for a reply) from time to time, when you can get notified instantly. I guess with a lot of improvements needed in this forum, the "new forum" will be live sooner than we can expect since we don't have any updates regarding its progress. Let's just wait and hopefully this feature would be accounted for!
