Laravel - 在现有数据库上安装AdminLTE

I am using Laravel and have it fully completed my project. Now I want to install AdminLTE which I have successfully done following these steps in this video.

https://www.youtube.com/watch?v=kpzYy4qttTU

The end result in the video is the same end result I have.

My question is my database I have a few tables I would like to add the menu and the ability edit rows from the database in this admin section. My question is how would I do that? I can't seem to find anything online about it. How do you configure an existing database to Laravel AdminLTE?