TL;DR

Beeper Desktop → Gear/Settings → Notifications  → Accounts

How to customize notification sounds per Chat Network on Beeper Desktop?

Customizing your Chat Networks with different sounds for each one is possible. This will give you an audible cue to prioritize your received messages depending on the sound you hear.

You can customize the sound of each chat on Beeper Desktop by following these steps:

1. Open Beeper Desktop.
2. Press the Gear (Settings) icon
3. Press Notifications
4. Scroll down until Accounts
5. Go through all your accounts and customize the sound of each if you want to.