Step 2: Create option sets
Only 1 more step to go hooray! Now create an option set to assign your beautiful options to products!
Step 1. In Option sets (Step 2), click on Create Option Set
Step 2. Find the products you want to add options to with Tag, Vendor, Product type, URL, URL Handle or apply to All products.
Find tag, vendor, product type, URL, URL handle in Products menu of store admin
Step 3. Choose options to display for selected products
Check the box in the Required column if you want to make that option compulsory. Customers cannot skip required options to proceed with adding products to Cart.
Step 4. Click on Save changes.
--> If you have activated the app in the theme, you can see them on the storefront now!
This is your great work on the storefront!