uploading image in Imperavi Redactor 10.2.3 Widget For Yii2

Hi guys, today i installed Imperavi Redactor 10.2.3 Widget For Yii2 in my application, but now i have problem with uploading image. I haven’t idea how configuration my app to upload images as this example:


I tried to searching for tips step by step and i found few but no one work for me.On the other hand i have this:


But I cant understand this becouse there is not described in detail in where files have to keep this code? Anyone recently used this widget and can help me with configuration of this step by step pls?

[color="#006400"]/* moved to Extensions */[/color]