Counting days issue

Hi Folks, new to this forum as I am looking for a solution that has got me stuck.

The attached sheet shows a number of calendar dates in row A, In column A2:Ax are the number of days that a training course will last, I have a macro that enters the start date of each course, but cannot find a way to add the next day(s) based on the value in Column A.
The final sheet should look like part two of my attachment.

I need a macro for this as I have around 200 values in Column A and around 6months worth of training dates in Row A.

Any assistance will be greatly appreciated.

IanE