I have a customer on a Zoho Workplace Standard Plan. They want to enable browser/desktop notifications and have a sound go off when a new message arrives. The "Desktop Notifications" option is missing from "Settings" -> "System" for them.

For comparison, I am a Zoho One user, and I can see that setting, which needs to be enabled in order for the browser to play a notification sound:

Please advise how a Workplace user can enable notifications in Zoho Mail when this option is missing?