creator mapping

hello grateful to everyone.
I wonder if algume can help me with a step by step introduction so that I can create a mapping unsando keys alt + ctrl + A.
Already looked at the entire program and not found how to create custom mapping

And grateful to all

This is not a job that FontCreator should do.

The character typed by your keyboard depends on the keyboard in use. Some software like MS Word allows you to customise the keyboard, or you can create a customised keyboard for Windows using the free utility, Microsoft Keyboard Layout Creator.