Quick Grouping is ideal for this. Hold down Ctrl while closing one ProChannel, and all ProChannels will close. Ditto opening...ditto adjusting console emulator for all channels simultaneously...it's a great feature. There are some rules, though, about how it works with respect to tracks, buses, and selected tracks. For details, go to the online documentation, click the index button, look for Grouping Controls, and click on Quick Groups.