You can set the time signature for a concert. Time signatures can be used with the Playback plug-in and also affect the operation of the metronome. When you set the time signature for a patch or set, it overrides the concert-level time signature while the patch or set is selected. When you select a patch or set without a time signature, it uses the concert time signature.
In the Concert Inspector, select the Has Time Signature checkbox.
Double-click the number in the field to the right, and enter the number of beats for one measure of the time signature.
Choose the beat value from the pop-up menu to the right.