Get a Gen 1 form filled by HR department or supervisor?

Dear all,
I did my internship without being registered with PMDC and got my full registration after that. GMC has asked me 2 questions

  1. Get a Gen 1 form filled by HR department or supervisor?
  2. Letter from PMDC explaining why I didn’t need provisional registration for internship.

Now my questions are:
Since my supervisor is not working at my hospital and moved somewhere else, can I get it signed by my medical college HR I have no idea whether or not the hospital associated with my college and where I did my internship has an HR department.
Can I get such a letter from PMDC?Many people who got this letter were late in applying for provisional registration while I didn’t apply for it at all( and I think GMC has used strong words by writing" ger a Letter issued by the PMC confirming why registration WAS NOT NEEDED" for your medical post