Switch from Grid to Arrange in the transport bar to enter song-mode. You'll see a horizontal timeline of bars; drop pattern slots onto it to build a longer song.

Building an arrangement

• Drag a pattern slot from the left rail onto the timeline.
• Drag the edges of a placed block to extend or shrink its repeat length.
• Drag the body to move the block to a different bar.
• Click a block to select it; ⌫ deletes.

Loop region

Click-drag in the timeline ruler to set a loop region. While playing, the playhead jumps back to the loop start each time it crosses the loop end. Use the loop toggle to enable / disable.