Hi ...
found a video on a 2003 model.
2003 Great West Class B Camper Van with Slide - YouTube
Shows the dinette set up with the slide in the out position. To use the dinette when the slide is in, all that needs to be done is remove the centre seat cushion and the plate below it.
BTW, with the exception of driving in high winds, I love driving this RV. It's very comfortable out on the highway and easy to handle, park, reverse, etc.
Cheers,
Steve