Enable Pi Presents to start your exhibit program automatically:

1. StartPresent.sh
Modify the exhibit profile name in StartPresent.sh, and place this file on the Desktop.
Make StartPresent.sh executable: chmod ugo+x StartPresent.sh

2. pp_start.desktop
Use mkdir to create an autostart folder in /home/pi/.config/.
Place the file pp_start.desktop in this folder.  

3. .bashrc
Add the following lines to the end of the .bashrc in your home folder:
#  start pi presents exhibit
cd Desktop
./StartPresent.sh