Automation - launch an app and modify settings

I'm looking to be able to change settings within an app based on some external trigger. Trigger doesn't seem to be able to do this, and I can't seem to find an answer on whether Tasker can.

Specifically, I want to be able to change the notification settings for Hangouts when i'm on my work's wifi - turning them off when i'm at work (and thus at my computer looking at my gchat) and turn them back on when I leave.

I'm on a Moto X 2014 (2nd gen), ATT version (so not rooted).

Thanks!