Hello,
"Vacation Request" is a BPM Process. To work with BPM projects you have to open the BPM perspective (Window -> Open Perspective > Other... -> BPM). Here you can see the BPM Explorer View (Window -> Show View -> Other... -> WebRatio -> BPM Explorer) that shows the created BPM projects. You can expand the project node and see the "Roles".

The Vacation Request BPM Tutorial is explained in the article of the Knowledge Base and it is also available in WebRatio: Help > BPM Samples > Vacation Request.
About the second question, can you describe your current situation and the steps to reproduce the error ? Do you refer a BPM project tutorial ?