help with DCC controller

[Lakaferacr]

have a bachman ez track dcc controller,  how do i assign a engine to number one then one to number 2 etc. all of them are factory programed to position 3 heeelp please

[ACY]

There should be instructions with your system, if you read them and still do not know what to do, try watching the Bachmann video included with the system.