I guess what I answered below was the same. If I understood you correctly, you need a sum of all efforts, planned, spent and remaining for the tasks of your choice. For that create the context which selects the issues that interest you and use the hour burn down chart using this context.
Another option if you need more flexibility and portability:
It also enables you:
Badges are a great way to show off community activity, whether you’re a newbie or a Champion.Learn more
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG