: You can browse the Office Store directly from within PowerPoint. Go to the Insert tab and select Get Add-ins .
: For a professional, high-precision clock without third-party software, you can use a small piece of code.
Save your file as a .
Enable the tab in settings and create a new macro named "Clock".
Assign this macro to a shape or text box on your slide to trigger it during the presentation. Download Clock For Powerpoint
Paste a that updates a text box with the current system time.
: PowerPoint has a built-in feature under Insert > Date & Time . Check the box for Update automatically . : You can browse the Office Store directly
These add-ins provide resizable, customizable countdowns and live clocks that run automatically in slideshow mode.