biometric appointment for dependents

Hello,

Even we are looking for family appointment but dates are not available till end of June.
Would like to know if dependents can book biometrics appointment individually ?
In my case my hubby is the main applicant and me and my son(under 16) are dependents all applied at the same time.
Is it fine if my hubby and me along with my son(since I am his resposible adult) can book appointment individually ?
Can someone please clarify.

Thanks
Tan