How to set a reminder during a Zoom meeting without anyone seeing it

The most discreet way to set a reminder during a Zoom meeting is to use the Zoom waiting room chime. Tools like DemoTimer automatically trigger this chime at a set time before your meeting ends, so only you hear it. The prospect or client sees nothing, and you get a clear audio cue that it's time to wrap up.

Option 1: Phone timer

The most common approach is setting a phone timer before the call. It's simple and everyone knows how to do it. The downsides are real, though. If your phone is on vibrate, you'll probably miss it while you're focused on a screen share. If the sound is on, the alarm might be audible to the prospect. And you have to remember to set it before every single call, which means you'll forget at least some of the time.

Option 2: Zoom's built-in timer

Zoom has a timer feature that you can enable during a meeting. The problem is that it's visible to everyone in the call. Having a countdown clock on screen during a sales demo or client meeting sends the wrong message. It tells your prospect that you're watching the clock instead of focusing on them. For internal meetings it works fine, but for external calls it's not ideal.

Option 3: Browser extension timer

There are browser extensions that display a timer overlay on your screen. These can work, but they require manual setup before each meeting. You need to open the extension, set the duration, and start it at the right time. If you're hopping between back-to-back calls, this is another thing to forget. The timer also takes up screen space that you might need for notes or your CRM.

Option 4: The Zoom waiting room chime (fully automatic)

This is the approach that requires zero effort per meeting. DemoTimer connects to your Google Calendar, identifies meetings with external attendees and a Zoom link, and automatically sends a lightweight bot into the waiting room at a set number of minutes before the meeting ends. You hear Zoom's familiar waiting room chime through your speakers or headphones. Your prospect sees and hears nothing.

The bot enters, triggers the chime, and leaves on its own a few seconds later. There's nothing to configure per call, no app to open, and no risk of forgetting. You set it up once and every external meeting is covered.

Which option is best?

For internal meetings or one-off reminders, a phone timer works fine. For external calls where discretion matters, the waiting room chime is the clear winner. It's invisible to the prospect, audible to you, and fully automatic. Sales teams that use DemoTimer report that the consistency is what makes the difference. Every demo, every rep, every time.