If you only have a single process then it is very easy. Just double click on that process and choose Save As New. That will save your printer settings into the permanent S3D profile database. That database is maintained regardless of what processes you have loaded. At any time you just expand the "Select profile" drop down list and you will see your settings listed.
For adding the material options, here's a screenshot of the "Assign settings to categories option". Hopefully that helps you locate it.