How can I create quarter note triplets in MuseScore?

To create quarter note triplets in MuseScore, first select the notes you want to turn into triplets. Then, right-click on the selected notes and choose "Tuplets" from the menu. In the Tuplets dialog box, select "3" for the number of notes and "2" for the type of notes. Click "OK" to apply the quarter note triplets to the selected notes.