@daemon33
yes, separate application for husband (primary applicant) and wife (dependent)
yung i aattach mong supporting document is yung ITA mo - ang ilagay mong filename is Invitation to Apply - Primary Applicant - Name
Sa wife mo - Invitation to Apply - Dependent of (your name) - Name ni wife
May portion dyan ng explanation - utilize mo iyan maigi to explain (sa application ng wife mo) na the application is for your wife as your dependent. May sample dito e back read ako maya at ipost ko dito. Kasi by providing a detailed explanation e maiiwasan mo na ma decline ang application mo due to further questions.
Dont worry na maski mag separate application kayo e makaka sched ka pa din ng same day/ same time for the both of you para sabay na kayo punta dun. Sa labas lang ng Tanjong Pagar station ang SG Police.
Tama na you need to attach a copy of marriage certificate under the application of your wife.
Balikan mo din ang old passport to check yung exact date ng unang entry nyo sa Singapore, dahil itatanong din kayo dyan.
Para sa departure date na question, i estimate mo lang ng + 11 -12 months from the date na nag apply kayo.