Send muting

I'd like to know as well.

Unfortunately bus send enable is not automatable.  So looks like I'm stuck with manually automating send levels.  Much more convenient, however, to just click a mute button on or off.
 
Thanks for the reply. 

If you really want to be able to automate the send with a button, you can route it through an Aux track to the bus, and automate the Aux track's Mute or Input Echo. It's trading 'clutter' for convenience, but I thought I'd mention it.
 
As for whether this is a 'standard' feature, I did a quick search, and immediately found forum posts indicating this isn't possible in Logic Pro or Harrison Mixbus, either, so SONAR's not alone, though it might be in the minority. I also failed to find a request for it in the Feature Request forum and only a handful of other posts about it over many years, so apparently it's not missed that often.
 
Every DAW has it's own set of unique or unusually-implemented features and ways of doing things; you get used to the features you have, and generally don't miss the ones that aren't available. When you run into that one missing feature that seems like a gross omission, you have to keep it in context. Every time I've tried another DAW, not an hour went by before I was banging my head against a virtual wall, trying to do something that's a cinch in SONAR.

All good comments.  Thanks so much for the responses.

Sanderxpander
 
I was just thinking that patch points should be able to do this. I haven't used them yet though...
EDIT:
Well it isn't EXACTLY the same but you can accomplish it. You can't "insert" patch points like you can a VST effect, but you can set the output and input tracks as patch points. That means for instance if you want a post EQ, pre flanger send you would set up a track with the EQ and one with a flanger. You'd simply send the output of the EQd track to the input of the track with the flanger using patch points. Creating a send on the EQd track is then automatically pre flanger. It's a little convoluted but it works. I'd also like the option of inserting sends anywhere, though to be completely honest I can't say I've missed it much the past few years.

Aux Tracks/Patch Points were something I didn't get too excited about when they were announced because it seemed like most of the stuff they were being marketed as doing I could already do in other ways (and I've always actually really liked the Sonar Bus method over the way other DAWs roll like PT).
 
However since their introduction they've not necessarily allowed me to things I COULDN'T do before but made those tasks a little more streamlined. The more I contemplate how they can be twisted in bizzarro ways though I've been able come up with some pretty interesting/useful ideas. Of course people who use other DAWs have probably figured out anything I've come up with but just the paradigm shift from the "all bus" methods has opened some procedural doors for me.
 
I did an experiment recently on a track for Baps where I used Aux Tracks to use two different guitar sims for parallel processing. Essentially I had my dry DI track feeding two aux tracks that each had a different sim on them (TH2 on one aux and GR5 on the other). Normally to do this in the track pane would require cloning the track with the audio data in it (messy/annoying/uses up extra resources because of extra clips) or using busses (taking your track effects all the way ver into the bus pane and adding a ton of extra busses with complex routing when I'd rather keep it to group/submix busses).
 
Once the sims are set and the tracks blended they get sent to a submix Aux track and everything else can be hidden in Track Manager and that submix Aux track becomes the main track/fader/output to bus/etc and I get many more options for shaping the tones.
 
Tone chaser's wet dream.
 
/blathering