Step 1:
Click on the [+] ICON on the left panel and scroll down to ELEMENTS; NOUN PROJECT/ICONS8.

Step 2:

You can use icons to highlight key features of your product. Click on the icon to add it to your canvas.

Step 3:

Select the icon to open the EDITS PANEL on the right.

Click on ADD SHAPE CONTAINER.

Select the shape you want to use; you can customize the colour and the border colour of your shape.

Step 4:

You can make further adjustments to the border thickness, radius, and icon size.