Turbotax won't recognise and entry in box 105  of the T4A

@heathermuirhead, in EasyStep or the Online interview, you should see it about halfway down the T4A entry page.
In the T4A entry window in desktop Forms view, click the entry field in the bottom row to enter an amount from Box 105.

If the software is not letting you enter an amount, please reply with more detail about any error message you are getting.