When DAP recognizes an attempt to download a file, it will display the download screen. You can change the directory into which the file will be saved, or decide you only want to add the file to the queue and download it later.

The Save To box shows the location in which the file will be saved (click 'Change' to define a new path). You may add a file description in the Add Description box.

In the lower section you will be presented with a list of mirror servers DAP has found for the file being downloaded and the results of the proximity check.
You can either press 'Start Download' or 'Download Later' to add the file to the queue.
Click 'More' -> Advanced to select different speed and user agent for this file.