I finally made the move yesterday to Windows 10 from 8.1.

On 8.1 I actually loved the start screen (I haven't yet gone full screen Start on Windows 10) and I had many categories/groups set up of my favourite applications (Imaging, video, mobile etc) but the Windows 10 upgrade has given me a start menu which just has two categories: Life at a glance and Play and Explore. All my other programs have just been bunched in below these two groups and I've lost all the groups I set up in 8.1. Is there any way to get these back?