These questions will be most precisely answered by the Social Security claims representative who processes the dependent benefits. Although a dependent benefit application is supposed to be automatic, it often is not. When the Notice of Award for the wage-earner benefits is received, you should inquire about the status of the dependent benefit awards. Additional documentation such as birth certificates may be required. Be aware that the total dependent benefits may be less than one-half PIA. The amount is individually determined based on the wage-earner work record and is designated as "FAM MAX" in Social Security's records. It is unlikely that the three benefits will be combined because the dependent benefits are processed separately, and may be payable on a different day of the month. Even the two dependent benefits might be paid separately, but they will all direct deposit into the account you instruct.
Best wishes for a favorable outcome, and please remember to designate a best answer.
This answer is offered as a public service for general information only and may not be relied upon as legal advice.
You didnt let us know whether you have custody of your children. If you do not, then the parent who has custody will be the representative payee to handle the children's benefits. Regarding the deposit of these benefits, depedent's benefits are not automatically set up and require an application to be filed. At that time, the claims representative will give you more information on how the benefits are processed.