It's very easy, Login your linked-In page and go to the "add profile sections" or About section for Featured, then you can find some sections like links, document, article and more. But I will give you four tips to follow:


1️ Add media, links, articles and posts


2️ Use media that addresses your audience’s Point of Pain


3️ Delete non-relevant media


4 Arrange media in the order YOU want people to see


Give a try and Adjust your brand more professional.