passport renewal

How does priority lane in dfa work? We're planning to renew our passport kasi. - I'm 7 months pregant - My husband (definitely not priority) - My 6yo daughter (new applicant) Our preferred site kasi does not have available slots on our preferred date. Pwede bang kumuha kami ng ibang date na available (halimbawa weekday pero pupunta kami ng weekend). And pwede ba isabay si husband sa pagkuha? Thanks for the inputs po ?