How to formalize the transfer of a software product by a student to an educational institution?

Question

Copyright

An educational institution (UZ) has concluded an agreement with the enterprise for the internship of its students.
During the internship, the student created software, a website, another software product (based on similar products developed at the enterprise itself, including with the help of employees of this enterprise), which can be included in the educational process, or somehow used in KM.
The student also wrote a graduation project based on the results of this practice.
Questions:

1. How should the student transfer this product to the use of KM?
   
2. What documents are required for this?
   
3. Whose copyrights can appear in this software: a student, a university, an enterprise?
   
4. Can an enterprise use this product for its own purposes: develop others based on it, indicate it in the list of its works?
   
5. Can't UZ and/or the enterprise be punished for violating the law on public procurement (such as bypassing public procurement)?
   

Answer 1

It seems to me that students are not the people who can download rights .. Otherwise, you can remain without credit)

Answer 2

Well, if “based on similar products developed at the enterprise itself, including with the help of employees of this enterprise”, then the rights to the product by default belong to the enterprise, and it is up to them to decide how to dispose of this product.
On the other hand, questions arise:
It's not really clear what the problem is here.