Help with Pattern - German Short Rows

How do I complete the step outlined in yellow? The yarn is connected to the German short row, so how am I supposed to work it?

Any help is much appreciated!

Welcome to the forum!
When you knit across to the last 20 sts then turn you will be ready to work across the purl side of the sweater. Make the double stitch that is part of the German short row and proceed to purl toward the double stitch from the previous row.
Here’s a video that shows the steps, knit, turn, double stitch, purl.

What is the name of your pattern?