Represent one version of your product with multiple options.
In the app, you can add variants to the products from the product form. Firstly, add options & then, add variants to the available options.
Note:- You can add a maximum of 3 options & 100 variants to a product.
Do follow the procedure to add variants:-
Firstly, click the “Add Variant” button in the product form.

Clicking the Add Variant button, get the options to add options & related variants for the product.

Click the Save button.