Additional holes used during maintenance

Hi, I recently played on a course that has 20 holes which they use when they are doing maintenance. Is there any way to add the extra holes or manually input stats and distances so it doesn't mess with the other holes.
An example is that after playing the 14th hole I then played the 19th hole, that was next to the 15th tee which the gps thought I was playing, I then teed off halfway down the fairway on the 15th and then skipped a hole that was under maintenance.