If you're trying to choose from a drop down menu, and the only option you see is "------", then you may be trying to create a pattern before you've saved body measurements and a gauge.
To create body measurements, get started here. There are videos that can help you through the process. After that, you can create a gauge on this page. You can find these options anytime from your home page.
Once you have a gauge and measurements, you can create your pattern!