Simply, Go to Sumi > Theme Options > WooCommerce > Categories and setup Category products for your site.
1. You can setup the number of Category products items per row on Desktop (Screen resolution of device >= 1500px) here.
2. You can setup the number of Category products items per row on Desktop (Screen resolution of device >= 1200px < 1500px) here.
3. You can setup the number of Category products items per row on Portrait tablet (Screen resolution of device >=992px and < 1200px ) here.
4. You can setup the number of Category products items per row on Portrait tablet (Screen resolution of device >=768px and < 992px ) here.
5. You can setup the number of Category products items per row on Mobile (For grid mode – Screen resolution of device >=480 add < 768px) here.
6. You can setup the number of Category products items per row on Mobile (For grid mode – Screen resolution of device < 480px) here.