After creating your shop sections go to
MagetSync > Global Options > Shipping Profiles.
Here you need to create a list of shipping costs for your Etsy customers.
On this page you need to insert a label that will help you identify the shipping profile you’re creating. You can have as many shipping profiles as you need.
Select the typical processing time that will apply for this shipping profile and the country from where products under this shipping template will be shipped.
Under Shipping entries select the countries you ship to and the primary shipping cost. If necessary, you can offer combined shipping costs by using a secondary shipping cost (under ‘With another item’ field). Secondary shipping cost is the added value when items are purchased and shipped together.
To learn more about Etsy’s shipping option – please read: https://www.etsy.com/help/article/6131