To add a new column on admin customer group page we will use extension attributes, which are new to Magento 2. They extend default functionality and often use more complex data types than custom attributes. These attributes do not appear on the GUI. This method is simple to implement, however, it is suitable for version 2.2 and earlier ones. First I will explain to you the implementation for 2.2 and earlier versions, and then we’ll proceed to 2.3.
Andrey Masyuk
Andrey is a young back-end developer from BelVG. He works with PHP and JavaScript programming languages and has MVC, OOP and DB skills. In his free time, Andrey enjoys doing martial arts.