Copy and paste is useful tool for repetitious music or for shifting a section of music by a beat or two.

Copy

1. Click on the first note of your selection
2. Shift+click on the last note of your selection. A blue rectangle should highlight the region you selected.
3. From the menu choose Edit → Copy

Paste

1. Click on the note or measure that you want your pasted selection to begin
2. From the menu choose Edit → Paste