With Pika Pro, you can add multiple shapes as well as highlights in your image. Highlight layer lets you highlight a specific part of your image
You can add a highlight layer by clicking on "Add" dropdown in the tools bar above the canvas, and then selecting the "Highlight" option from the dropdown
Once selected, you'll see a highlighted area on your image. You can resize this area and customize border, border color, blur, opacity etc
Highlight is available in the main tool as well as most templates
(Takes just couple of minutes)