[AC Question]

The apps edge panel can carry maximum 10 apps. I want put more apps to the edge panels. Can I create multiple apps panels? How?

When I first bought the phone and started the edge panel, there was a plus sign at the left bottom of the screen after the white dots as can be seen in the first photo on the page s7 edge tips and tricks of digitaltrends.com (I cannot post the link because the forum rejects the message as a spam) . When I clicked on it, it allowed me create new panels. However, the plus sign disappeared later. Why did the plus sign disappear?