Hey everyone

My friends 17 year old son is flying DEL-SIN-SFO (through ICN) in Suites/First. He's flown alone many times so definitely doesn't need any UM service or any assistance.
But when they booked his ticket it said he has to fill out the assistance and handling form and hand it in at check in.
Can someone explain what that is for since he doesn't need the UM service or any assistance?
And who is the "witness" as said on the form?

Also, I found a thread from a while ago regarding this same form, and it mentioned that the parent needs to drop the passenger off at the airport.
Is this true even if he doesn't want the UM services? His parents will not be there so he will be checking in alone.

Will he have any problems? They are gonna call SQ to confirm but I just wanted to find out any info here on FT first.

Also, he will have access to the lounges in DEL, SIN and ICN right?

Thanks for any help!