Recording the same series on two channels

I'm trying to series record Jeopardy on both 240 NTV at 3:30 and 255 CBS at 4:30.  When I try, Telus TV+ software just changes my one series recording to use the other channel.  How can I record both?  (so if I find that one has audio blips I can choose to watch the other) I could do this on an old style hard drive pvr but not sure how to do it now.