To make the repeat play 5 times you need to select the end repeat bar line
and then check the play on pass 1, 2, 3, 4, and 5 check boxes in the
playback properties pain.

1. Press Control + F1
2. Choose live playback properties.
3. Select the first play on pass button and if it is not checked, press
enter.
4. Do this for each of the first five play on pass check boxes.

The whole of the properties window is accessible in beta 2 so this method
will be revised accordingly.