Go to the App Store and search for Sched. The Icon with the black background and the white and gold astronaut is the right one. Click Get.
Search for LUC 2021
Here you will see the LUC 2021 Schedule open, but you need to log into your account to customize your schedule. Touch My Sched to sign in with your email and password which you used to log into the site after registering.
Once you are in your account, you can customize your settings. Click Schedule on the bottom navigation bar.
Here you can add sessions to your schedule by touching the circle next to the session. Toggle between the full schedule and your customized schedule in the top navigation bar.