In this Video Panasonic's Tech Team Provides you with a quick explanation on the Dual Card Slot functions. These functions allow you to set the way recording to the card slots 1 and 2 is performed. Functions include Relay Record, Backup Record and Allocation Record.The model shown in the video is the LUMIX DC-GH5, the information in this video also applies to LUMIX DC-G9 and DC-GH5S. Menus and options may vary.