Hide "Schedule" buttons for site/page if already queued

[kabel]

Or do you want to be able to queue something already queued?

[mfairchild365]

Rather than hide, I would disable them. You can not queue something if it is already queued. If you try, you will get an error.

[kabel]

Can to button become enabled without reloading the page? If not, it shouldn't be there.