The 3 means your CC has 3 of them available. If you click on the "club tournaments" you will see a drop down called "create custom courses. If you click that it opens up the opportunity to create a custom course using holes from the 11 standard courses. No Bandon Dunes holes are available. All the Best of courses are made up from those 11 courses.
Each hole may be used only one time for each custom course. After you create a custom course you use one of the Course Builders to publish the course as a CC Tournament.
The course builder is good for only one tournament. So if you want to have multiple tournaments on a course you create it takes 1 course builder for each tournament. Length can be 9 or 18 holes. Multiple rounds are available as is single or unlimited play, just like in any tournament you create.
Hope this helps.
phred952