If you have two different businesses, you need to complete two separate T2125 - Statements of Business Activities. You'll be able to enter each individual Industry Code on each form. To do so using TurboTax Online:
Go to Income > Self-Employment > Self-Employment Summary. From here you can choose to "Enter New Business".
Here's a link to Industry Codes compatible with TurboTax software: http://www23.statcan.gc.ca/imdb/p3VD.pl?Function=getVD&TVD=1181553