This will show you how to change order of apps in iphone or ipad notification center for groups of apps in your ipad or iphone notification center. It helps when you have lots of apps that send lots of notifications and you only want the important ones on top.
goto settings > notifications
There are two options to control the order of the notifications in notification center: ‘manually’ and ‘by time’.
Choosing ‘by time’ will put the group with the latest notifications on top.
Choosing ‘manually’ will let you pick the order of the groups of notifications when you show the notification center.
Change order of apps in iphone or ipad notification center
If you press ‘edit’ in the top left of the notification center then you can re-order the apps.
I generally have mine set to manual, as I’m not really concerned about most things other than my email and my calendars, which go on top.
Sources: Apple Support