A product uses the first Product Profile found in this order: chosen on the product → child category → parent category → tag → default profile.
By category or tag #
In the profile’s Apply to products box, choose product categories and tags. When several profiles match at the same level, the one with the higher Priority wins.
On one product #
Open the product and use the Product Profile box (right column). A profile chosen here takes priority over profiles assigned by category or tag. The box also shows which profile the product currently uses.
Default profile #
Tick Default profile (used when nothing else matches) on one profile, or set it in POD Profile → Settings → Default Product Profile.