There has been a departmental policy that if a student fails a course because of a failed final exam, failed project, or other component of the course that must be passed in order to pass the course, the student's mark is the minimum of the computed mark for the term and a mark of 45. (If this is misquoted or no longer the case, someone please edit this entry.)
Grad students must have an average of 80% and at least 72% in each course for it to count for their breadth requirements (see http://www/grads/affairs/Handbook.pdf)
If you want to give a student an extension at the end of the term, in FSC, you can enter a "T" for Thesis in Progress or you can just leave it blank. If you enter "T", then you would need to submit the change of grade form when the student completes the course requirement. Some instructors prefer leaving it blank to avoid the paperwork. There is no published deadline for filling it out, and other students should be able to see their grades as long as you "submit" (not "save") the grades.
You can use https://ssc.adm.ubc.ca/fsc/servlets/SRVFSCFramework to give you a classlist for the classes you're teaching, or you can use the command "classlist [classnumber]" to give you a quasi-up-to-date listing.
The AMS has a database of old exams from classes at http://www.ams.ubc.ca/exams/index.cfm?subject=CPSC. Currently they only have exams from 315 and 430, but you may want to check there if you're planning on reusing things.