hello. I want to make a table runner measuring 72"x9" but can someone tell me how to re-align my design as i want to do a continuous pattern down the centre of it and need to keep moving the hoop.

Be sure to practice to be comfortable with the aligning of the pattern before doing it on your runner. Hoping to see your runner posted.

There's an article about multiple hooping in Design in Machine Embroidery #61. Click the link below, a bit down the page you'll see
"View Digital Magazine Now" click that and go to page 42 and 43.