So just to clarify, you have the following requirements:
Customers must purchase at least 2 items.
Of these 2 items, 1 must be a bracelet, AND the other must be a necklace.
The 10% discount must apply to both items.
Is this accurate?
If so, then what you’re trying to do is more complicated to implement than it sounds.
Neither Shopify’s built-in automatic discounts, or my app, Regios Automatic Discounts, can handle this out of the box. Both options can only handle requirements #1 and #3.
The “AND” logic mentioned in requirement #2 is the kicker here.
I suggest trying a bundle app (there are tons in the App Store), and then applying a discount to the bundle. Shopify has recently released their own app, Shopify Bundles, so it could be worth a try.
We launched a new app, Simple Discounts that allows customers to choose a specific number of items from different collections to get a discount. So it should solve your issue. Here’s a screenshot of exactly how you’d set this up.