receive envelope automation?

[babag]

maybe i have this wrong but there seems to be no automation available via receive envelopes. i thought it would be easy to set and alter the relationship between reverb levels by going to my reverb buss and displaying my various receives. was surprised to find that i couldn't do that. that means i can only go to each individual track and set them one at a time. is that right? if so, i'd love to see the ability to display and automate my receives in my buss track so i can work in a space in which they are all gathered together. i'm doing this more for post than music mixing, although, there is overlap. is there a better way to do this?

thanks,
babag