Sample editor ruler

I open an audio recording in the sample editor. It’s in 3/4 and the ruler shows the bars and their semiquaver divisions above the audio. However, in this particular section the instrumentalist played in quaver triplets, and I’d like to examine timings etc. to make sure some of the notes fall right. Is there any way I can get the ruler to show bars, beats, and quaver triplets for example or am I stuck with the system bars and beats ?

Best Regards
Graham in Chezzy