Step 1: Look to the right, below the dupe panel and look for "Add/remove required addons", then click on it.
Step 2: Click the "Subscribed" tab
Step 3: Look for the addon that's required and click the + symbol next to it
Step 4: You can repeat step 3 for however many times as you have addons required for the dupe
Step 5: At the top of the page, click "Back to your item" and it will take you back to the dupe page


Also, can you credit the og maker of this dupe?