Automatically back-burner a file which uses Captcha

Will it be possible to change download priority
or
to leave a file which uses Captcha on the back-burner automatically?

what is it back-burner?

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found some definition on WWW

Putting things on the back burner means to deliberately and consciously choose some actions and activities to de-emphasize so that you can focus on the most important items.

Back-Burner means leave something behind in the cause of something greater, delay an unimportant task.