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To do it, use the drop-down menu cloaked under the "Projects" (1) to access a desired project and then go to the below located "Scheduled Issues" (2) to find "Create" (3) button. It is possible to access Scheduled Issue details page by clicking on the any of Scheduled Issue name names in Scheduled Issues table (4):
This is how Scheduled Issue details page looks like - it opens when you access any of the listed Scheduled Issues:
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