You will be prompted for your ribozyme userid and password. You can use cd to change directory, and ls to list files in the current directory. Open the Find Applications window on Dirac. Change directory if necessary. Find the view you like.
Experimentation is good.
If you attempt to plot the MO in a nodal plane, the Status Line will tell you so. You can toggle back and forth between 3D and Euclid plot modes. Print the ps file.