Unless you are creating a once-off custom form that you are using immediately by switching to Run Mode (Run Mode is covered in FAQ 10.27) and then discarding it without saving, chances are good that you will want to save your form. You can save your forms in three main ways:
Save the form in a Forms Library (saving a form to a forms library is also known as Publishing a Form)
Save the form to the File System as a File
Save the form in an Outlook folder
The most common way to save a custom form is to save it to a Forms Library. There are three types of Forms Libraries. Which one you decide to use depends on your particular needs.
These three Forms Libraries ...