How to make authorization in yii2 using dektrium?

Question

Yii

I installed this link https://github.com/dektrium/yii2-user and decided to use it. In short, I need authorization through social networks, namely through VK. According to this link https://github.com/dektrium/yii2-user/blob/master/... they indicated how to implement it, I did everything, but I don’t understand one thing, there are no further instructions on what to do. How can I continue to display the "log in with VK" button on the vug? how to implement it please help me with the solution