Lump Sum Payment

I got the paid parental leave first time, then only went back to work very part time so didnt qualify for that this time, so will be getting the parental tax credit instead (which is the $150 for 8 weeks). We are already getting weekly payments for working for families. When I rang up to ask about something else, the guy said that as they already have all our details I just need to ring up as soon as bubs is born and they will increase our WFF, and add on the $150 a week for 8 weeks. And you need to send in new bubs birth cert within 8 weeks or something as well.