Time formatting issue

Hi guys.

I'm really struggling with this, even though it sounds simple!

I'm working on a flexitime sheet for my department (I've attached a sample sheet). Each month the remaining hours, if any, roll over to the next month, and it also adds on two hours for that month. It all works fine except when I try and put it into hours/minutes format.

Any ideas or help would be appreciated.

Thanks all,

Tony