Hi Bridget,
I have managed to enter these repeat lines by, after entering the numbers 1 and 2 above the bars. In 'Edit Mode' select the 'Text Tool' again and place the horizontal and vertical dotted lines where you want the lines to start, ie above and start of the bar, click to set these dotted lines and an 'Edit Text' screen will appear. Now, press and hold the 'Shift' key whilst depressing the 'Underscore' key several times until you have the right length,this is by trial and error unfortuntely, press 'Set' or 'Enter'.
The length of these lines can be adjusted, whilst still in 'Edit Mode' and 'Text tool' selected, by placing the cursor on the line and clicking when it turns orange, the 'Edit Text' screen will appear again, now with a thick blue line. Click on this blue line and the thinner black line will appear, you can now either increase or decrease in the normal way.
So much for the horizontal lines, havn't managed the vertical lines yet.