How do you add applications to groups?

[Doctor_Who]

One feature that I really like about Windows Phones is the ability to group applications into what I believe are called Groups on the WP start screen. But often I'm finding it to be nothing more than a game of dodgems. For example, I have 3 weather apps which I want to group together into a Group on my Lumia 928's start screen. I had 2 already pinned to the start screen so I copied one over the top of another which created the group. I named it Weather. Then I went to my Apps, found the third weather app and pinned it to the screen. I went back to start screen and tried to move the third weather app into the Weather Group, but no matter what I did or how hard I tried or how long I tried, there was no way I could move that third app into that Group. Each and every time I tried moving the third weather app into the Group the Group just moved away.

What's that about?? Why does it do that?? And how do I get that third app into the Group?

 

[11B1P]

Try making the group folder tile larger, then try adding the third app to the folder.