College Board provides "Student Handouts" in one large PDF (linked here) with tons of information about the AP Assessment (Exam & Create Performance Task).
To make it easier to find specific sections, I have "sliced" the PDF into smaller parts. If you can't find what you need in these shorter PDFs, try the larger pdf (linked above).
Guidelines for Completing the Create Performance Task include the following:
AP CSP Policies on Plagiarism
Preparing for the PT
you SHOULD...
Completing the PT
you MUST
you MAY NOT
you MAY