我父母要来新，已办好短期签证，来后想要转成长期居留证，请问都需要甚末材料，最快要多久可以办好（包括体检）。因我最近忙，到时要老公陪他们去，所以是老公作担保人，那拿我的和老公的出生证明和我们的结婚公证可以证明老公和我父母的关系吗？需要父母的学历证明吗？如果长期居留必须是我作担保，那短期转长期的担保人可以变吗？
Social Visitor Whose Child (above the age of 21 years old) Is A Singapore Citizen (SC) or Singapore Permanent Resident (SPR)

A copy (original) of duly completed Form 14, Form V39 (Form V39 is only for non-Malaysians). Every applicant (including children) has to complete a set of these forms. You will require Adobe Acrobat Reader to read and print the form. Download may take a while;
One recent passport-sized photograph (colour/black & white) to be pasted on the top right-hand corner of Form 14;
Sponsor's birth certificate (original and photocopy);
Sponsor's identity card (original and photocopy);
Applicant's valid travel document.
Sponsor's and applicant's highest educational certificate (original and photocopy);
Sponsor's letter of employment stating date of commencement, designation and salary per month (for self-employed: sponsor's valid Registration Certificate from the Accounting and Corporate Regulatory Authority (ACRA) and Company's Profit & Loss Statement for the last 12 months);
Sponsor's Income Tax Notice of Assessment for the last 3 years (original and photocopy);
Sponsor's CPF Statement showing monthly CPF contribution for the last 12 months;
(The original and photocopies of the above documents are required)

Note: Application must be sponsored by the child above the age of 21 years old.

最近谁办过， 最快要多久？因为要安排旅游时间。
我老公做担保人可以吗？还是必须是子女？担保人可以更换吗？
确定不要父母的学历证明吗？不然趁他们来之前办好带来。。。