What you can do ist... Go to
ACP => ProtoPlog Settings => Box Upload Count
This option contains a counter, what means: The higher the counter, the more browse boxes appears on the screen while uploading.
Note: Too many boxes could cause Memory Timeouts!. I have tried to increase the counter to 6 and it worked. But usually I just need 3. See snapshot of
PhotoPlog Settings. I hope I could help you
-Mike