> ## Documentation Index > Fetch the complete documentation index at: https://bigbluebutton.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Timer and Stopwatch > Presenters can display a countdown timer or count-up stopwatch to all participants, with an audible alarm when a timer elapses. Presenters can display a [countdown timer](#timer) or [count-up stopwatch](#stopwatch) to all participants in the session. An audible alarm plays when a timer elapses. ## Activate a timer or stopwatch 1. Select the **action menu**. 2. Select **Activate timer/stopwatch**. Timerstop The side panel updates to show the timer and stopwatch options. ### Stopwatch Stopwatch options ### Timer Timer options All users see the active stopwatch or timer in the upper-right corner of the session. Timer or stopwatch in the upper-right corner