The VEX IQ Brain has four slots to store downloaded programs. You can choose which slot to use by setting the slot within VEXcode IQ Blocks.
The Slot icon is located next to the Project Name.
Select the Slot icon to change which slot to download the project to on the VEX IQ Brain.
Select the Download button to download the project to the select slot. Keep in mind that downloading will replace the previous program using the selected slot.
Run your program by selecting it from the main menu the VEX IQ Brain. The Project Name will also appear in the main menu to help recall which program slot is being used.