How to add Author Information on"About Author" section on the bottom of the post

[my add]

I use a Phantom blogger template. I’ve been trying to add my bio on the “About Author” section on the bottom of the post. I’ve 3 authors in my blog so I want to add each person’s bio on the post that the wrote. I think someone can fix this problem.

My Website:- In Technology World

[Author]

Posts