Dear,
you can go after 15 days of arrival,u should carry original passports of both, visa copy,your RP copy and debit card of you.my suggestion is you can go in the afternoon 12.00 - 2.00 pm and anyhow ladies section is free it will take hardly 20 mins,while entering take right and go straight in the left side u can find entrance then show your carried documents security to allow your wife not kid,for kids only passport needs and 100/- Qr will be deduct from your debit card,medical will be done for your wife,after two working days u can check in the medical commission website you will find the result that's it.
For my case someone said for my kid no need medical,that is OK but i am not carried his passport then i comeback to my home then went medical commission to twice. all the best.