I am in multiple Slack teams and have messages coming in frequently throughout the day. I am also on phone calls with clients all day who don't want to feel like I'm distracted during the call. I could put myself DND (do not disturb) on each slack instance but that's time consuming and I cannot always predict when I'll have a call.
I found a brilliant Slack app, called "OTTT", that allows you to issue slash commands to set your DND for a specified amount of time. To make this more awesome it also allows you, for a modest service fee, to link your Slack team instances so that one slash command sets all of your workspaces to DND. [u]This is what I need![/u]
Now with use of the Ariela app call state sensor and the Slack notify component, with a few small tweaks, I can auto DND when I'm on a call....ah, sweet silence.