The MIDI Click object is used to create note events at bar, beat, and division intervals. These can be sent to either a MIDI port or the internal speaker.
Choose New > MIDI Metronome Click.
Each project can have only one MIDI Click object. You only need to create a MIDI Click object if the one that existed when the project was created has been deleted.
There is a button on the Transport bar that turns the MIDI Click on and off.
Control-click this button, then choose Metronome Settings from the shortcut menu. This opens the Metronome project settings. For details, see Metronome Settings. In this pane, you can also set the MIDI Click to play during recording or playback. This dialog mirrors the settings in the Parameter box of the MIDI Click object: checkboxes for Bar, Beat, and Division allow you to generate note events separately for bars, beats, and divisions. The Channel, Note, and Velocity parameters define the MIDI channel, note number, and velocity of generated notes. The MIDI Port parameter allows you to set a direct output port for the metronome.