By default, each Document Type Group is automatically expanded to show all Document Types you have access to. If a long list of Document Types and Document Type groups is displayed, you can quickly collapse all of the Document Type Groups by pressing and holding down for a few seconds on one of the Document Type Group headers. If all of the Document Type Groups are collapsed, you can also quickly expand them by performing the same action.
You can use the search box in the upper right corner of the screen to narrow down a long list of available Document Type Groups and Document Types. Start entering text contained in the title of the Document Type Group or Document Type you would like to find.