For this example we will be using the Account object.
Navigate and select the object you want to edit the highlights panel on.
Click on the Gear icon and choose Set Up.
To Add/Remove fields form the Highlights Panel: Standard and custom fields can be displayed here so you can create formula field to put several together (e.g., Rep + Territory + State) to get more information into the panel. These fields will be data that will help the user ‘know’ the contact or easily access their contact information. You can edit each page highlights panel to include up to six fields. Salesforce Lightning has a new Highlights Panel that can show important information easily at the top of the page.