On my 2021 Silverado, the camera icon is on the third page of the home menu. You'll want to move it to the first page to make it easy to excess while driving. You do this by touching and holding the icon till it gets highlighted. Then without letting go of icon, you can move it to the first page. Of course, the first page of home menu will be all filled-up. So you'll need to first move an icon that's not as important to the last page.