Full Admins can register on behalf of a Household by following these steps:
Start by navigating to Members to search for and find the household. If the household doesn't exist yet, click Add Household and add at least one household administrator with a valid email address.
Once you're on the household record, click the Register button to begin the proxy registration process.
This opens the public registration page in PROXY mode, indicated on the right side.
The first step is to select the SUBMITTER (usually the parent whom you are doing the registration on behalf of)
Enter the Household address and primary phone.
Select the registrant from the list of household members, or create a new one.
Continue with the registration process.
Note: Once the registration is submitted, both the Admin who is doing the proxy registration AND the submitter/household administrator will receive a confirmation email (provided an email address was entered for the household admin).