To use the triplet grid, open your project in FL Studio and go to the piano roll view. Look for the grid snap options, usually at the top of the piano roll or in the toolbar. This is where the magic happens.  Once you've located the grid snap settings, you'll find an option to switch between different grid snap types, including the triplet grid. Select it, and you'll notice that the grid lines in the piano roll have changed to reflect the triplet grid. Now, you can place your MIDI notes on the triplet grid, and they will snap to the triplet rhythm, making it easy to create those syncopated beats that will make your listeners tap their feet.  Your beats will have a new level of complexity and groove with the triplet grid. And remember, you can still edit the notes' duration, velocity, and other parameters as you wish.