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Start by having both the Product Screen and Website Updater open
Once you have searched for the styles on the product screen you will need to select the tick box next to the ones you are wanting to add. Once they have been selected open the tab/collection on the Website Updater that you would like to add these styles to and select the Get Items button in the bottom left corner.
To change the order of the styles you can rearrange them by dragging and dropping them.
When you add new styles to the the tab, they will automatically be inserted at the top