S560T, PC mode

Hello

I have a problem with interactive projector s560t. in the manual it says about the positioning of the image distinguishes between two kinds of settings - PC MODE and VIDEO MODE. I need to change the image in PC mode, but I can not get into PC mode in advance setting I'm missing a few bullets and I tried to start setting in all possible states of the picture, just PC, just projector and each other, but nothing Any discussion on the same issue with another projector someone from Dell with customer solved the firmware update, you can please direct me how to proceed? 

thx for answer

Martin