According to the guidelines given in the Create PT handout:
seek guidance from your teacher or AP Coordinator to use and cite APIs or other pieces of open source code. Program code not written by you can be used in programs as long as you’re extending the project in some new way. You should provide citation and credit for programming code you did not write.
Students may not
Submit work that has been revised, amended, or corrected by another individual, with the exception of cited program code;
Submit work from a practice performance task as your official submission to the College Board to be scored by the AP program;
Collaboration can include peer programming in addition to brainstorming and debugging. Consult the Collaboration section of the AP Create Student Handout for guidance in the purple book pg. 79-81.
The Handout for Create a Digital Scene - Project Overview and Rubric section on collaboration was adapted from the AP Create Student Handout.