Thanks @sb0821 for the quick information. Couple of questions as your in-laws did the biometric from Dubai in how many days/weeks did they get the passport request or they didn't get at all till date due to which you applied for PHAC?Do the below:
**************My in-law completed Biometrics in Dubai but I think if anyone has PHAC approval they don't have to give biometrics.
If you already applied skip step#1
In case of PHAC request do we need to send separate Letter of Required support for each of the visitors (father/mother) and same way two forms for request for exemptions. The visitor visa was submitted for both of them together.