It's super easy to find and access channels related a contact. You can use this trick to avoid scrolling through your channels list to find channels.
*Note: You'll only be able to see the channels you're involved in.
1. Click on the Contacts tab in the left panel to open up your contacts list.
2. Select a contact to view the contact's details.
3. You'll see a list of channels in the Appears in channels section. Click on a channel name to instantly open the channel on your screen.