How do I assign shots and scenes to a Shoot Day?

Once you have created Scenes and Shots in Prep Mode, move to the Shoot Day tab. While inside your shoot day, pess the + icon at the top of the screen.

This brings up all the scenes you have created that contain shots. Click the check icon next to a scene to schedule all the shots in that scene into the open shoot day. 

If you want to schedule just some of the shots in that scene, click the scene, then select just the shots you want to schedule. Remember only scenes that contain shots will be available to schedule.