ADS marker positioning based on other marker

[M. Spock]

I have a Max marker that tracks the maximum point of a band pass filter in an ADS S-parameter sweep. I would like to have 2 other markers that automatically track the -1dB points based off the Max marker. Currently I have to manually move my two markers as I change filter values and the center/max changes frequency.

Is there a way to have my -1dB markers automatically track?

I'm using an older version of ADS (pre 2013) if that makes a difference.

Thanks.