1. To enable the scanner the Scanner API can be used. Refer the documentation http://docs.rhomobile.com/rhoelements/scanner
For MSR the CardReader API is available refer the link http://docs.rhomobile.com/rhoelements/cardreader
There are few code snippets in the documentation, you can use those for you application to enable the scanner and MSR
2. Yes , Both Scanner/MSR can be enabled on the same page
Kevin, you will also need to make sure you are on the latest O/S build for the ET1 - Rev C in order to have the correct drivers. You will also need the most current Rho Studio Build - 126.96.36.199 to support the updated drivers.