I like having notifications enabled and am fine with notification bubbles, sounds, etc. However when someone is doing major updating to a share I would love the ability to just mute indefinitely until I unmute again or have that along with the ability to mute the notification from appearing or sounding for a predetermined set of times, 5 minutes, 15 minutes, 30 minutes, 1 hour, 3 hours, 24 hours or something along those lines.
You can disable pop-up notifications by hovering your mouse on the “. . .” (upper right corner of your Insync app). Click Preferences > uncheck “Show pop-up notifications”. Let me know if your notifications still show so I can assist you further!