Icons when launching Edge

Hi,
I have recently purchased Norton for the first time. The icons which appear when I launch Edge have changed. There are 2 rows of icons in the center of the screen. I can edit the bottom row of icons by allowing my mouse to hover over the icon and selecting the 3 little dots. However, these 3 dots are not present with the top row of icons. To add to my issue, 3 of the icons are from shopping sites which I never use. I would like to change these icons to provide shortcuts to sites which I actually use. Can anyone assist? Many thanks.

the top row are fixed Ads