you can not select project or internship on
your own discretion.
Internship is for non job holders
and project is for on job students
in order to enroll in internship course, select that course during
course selection. Then if your organization demands internship
reference letter, you can request for it to your internship
instructor (get his/her email from LMS under internship course
heading--->course website). This internship reference letter
will be mailed at your postal address, which you'ld have to submit
to your organization (original copy)
Please note that it is not compulsory to request for internship
reference letter. Only if the organization which is willing to
provide you internship, requires internship reference letter form
university, then you should place request of it (via email)
for more details, please read internship lessons and FAQs in LMS