How do I use the Shopify Customer Groups app to create and manage customer groups?

To use the Shopify Customer Groups app to create and manage customer groups, follow these steps: Install the Shopify Customer Groups app from the Shopify App Store. Open the app and click on the "Customer Groups" tab. Click the "Create Customer Group" button. Give your customer group a name and a description, and then select the criteria for membership in the group. You can choose from a variety of criteria, such as location, purchase history, and membership status. Click the "Create Customer Group" button to save your new customer group. To add customers to your customer group, click on the group and then use the search bar to find the customers you want to add. You can also import customers into your group in bulk using a CSV file. To create promotions or discounts for your customer group, click on the "Promotions" tab in the app. From here, you can create and manage promotions specifically for your customer group. That's it! You can use the Shopify Customer Groups app to easily create and manage customer groups, and target specific groups with customized promotions and discounts.