Using XLN Audio Addictive Drums 2 Custom Collection is easy. First, fire up the Addictive Drums 2 engine. Then, start exploring the different ADpaks, MIDIpaks, and Kitpiece Paks you've chosen. To create a drum track, pick a drum kit from the ADpaks and add individual kit pieces from the Kitpiece Paks to customize it. You can also use the MIDI beats from the MIDIpaks as a base for your composition. When it comes to making changes, just click around the interface to swap out drums or beats. As for maintenance, make sure your software is always up - to - date. Check XLN Audio's official website regularly for updates. Keep your computer's system requirements in mind to ensure smooth operation. If you face any issues, reach out to XLN Audio's customer support team for help.