How to assign a product to and affiliate

This is the instruction:
However, i don see the Affiliates” meta box in the edit product
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Log in to your WordPress site and go to the Affiliates > Products page.

Find the product you want to assign to an affiliate and click the “Edit” link next to it.

In the product editing screen, scroll down to the “Affiliates” meta box and click the “Add Affiliate” button.

Select the affiliate you want to assign the product to from the dropdown menu.

If you want to set a specific commission rate for this affiliate on this product, you can do so by entering a commission percentage in the “Commission Rate” field.

Click the “Update” button to save your changes.

Now, the selected affiliate will be able to promote this product and earn commissions on any sales made through their affiliate link.