No, you would put them as separate
businesses (two T2125 forms). When you put in the T4A, TurboTax will
automatically make a T2125 form for that business. You can then add a second
one for the second business.
FYI: The industry codes were
revised in 2017 and some have changed. If you have problems with the ones you
have used in the past you can look up your current industry code on the Stats
Can website: http://www23.statcan.gc.ca/imdb/p3VD.pl?Function=getVD&TVD=380372
Or you can use the search tools
on the NAICS website: https://www.naics.com/search/