Hi Rizwan.
We can't advise on Epson projectors capabilities, please contact Epson for this information.
The feature you are after is not necessarily with the ActivBoard but your computer itself, you can download software to log in to your computer from your iPad which will allow you to remote desktop and control your mouse. In theory this is what you are after doing.
You will need to search for applications available to do this on the iPad.
I hope this information helps.
Adam
Promethean Technical Support
(Case 00430124)