I would like to know that what should be kept in mind while designing probes for real time multiplex PCR and machine used is Bio-rad CFX96 real time PCR system?
and its your machine compatibility for the probe preparation (reporter and quencher selection).
there are several websites that can suggest good quality probes for qPCR upon given sequence. you submit your target sequence there, and choose best ones from the suggested list. blast the selected ones and give the appropriate probe for synthesis.