Application of settlement Visa for Parents over 65

Hi, I was hoping if anyone can give me some advise on applying this visa. My dad is getting his 65 at the end of June and my mum is 56.

I have become a UK citizen last month and I am planning to get them to the UK and live with me permanently.

Would anyone tell me if I can get my parents ( Both of them) to the UK as my mum is not yet 65, shall I return back to my country to get the visa done and also what sort of documents do I need to hand in to the home office? Your help would be much appreciated. Thank you!!

See also Can parents, grandparents and other dependent relatives go to live in the UK? and Chapter 15 - Entry for settlement: parents, grandparents, other dependent relatives.