Deauthorize ipad

Hi if any one could help please...

I've two issues from having used my iTunes account/ Apple ID on the work iPad...

1) I've bought apps using my private iTunes account for my work iPad, so now... how do I keep these apps on my work iPad and then,

2) how do I deauthorize my work iPad so that it no longer links to or uses my private iTunes account?

Thanks.

View the original article here