Minor changes to existing iphone app quick

I am a developer and have a project that I am stuck on. 1.) I need to add a scroll view with auto scrolling when the user selects text field to existing screens (2 screens), so it is not covered up by the keyboard. I know how to do this when I start a project from scratch, but this was created by another developer and I can not figure how or where to make this happen. 2.) I also need to add one screen, very simple, 2 buttons, that I have already created. No new functions are needed. I just need to figure out how to add this screen and connect it to the existing application. You MUST have an advanced level of reading and interpreting existing code. There is very little actual coding needed, it's more an identification of the correct portions in the current code and inserting the scroll views and new view controller. I expect this to take an advanced programmer very little time to complete. Must be able to communicate via Skype to discuss details.