Starting with iCart
After installing iCart in your store and logging into the app for the first time, you will be on the dashboard. On this page, you will see a default template that you can customize as per your need or you can go with that default template for your store. But before starting to customize your template make sure that you have enabled iCart in your store. To enable iCart in your store go to Settings > General Settings.
Enable the app, it will start with default options, which you can personalize later on.
Finally, iCart is enabled in your store. Now you can start upselling with iCart in your store.