Allow attendees to register others
You can set up your signup to allow people to register everyone in their household, add more household members, and register people who aren't in their household.
Select the Signups page in the top navigation.
Choose your signup from the list.
Select the Configuration tab.
Select Settings on the left.
In the Registrant options box, choose between the available options in the Allow people to add household members during registration section:
Choose Always to let everyone who registers add household members while registering.
Choose Only if they don't have a household yet to only let individuals add household members if they don't have a household in People already.
Choose Never to prevent registrants from adding household members while registering.
Check the Allow people to register others outside their household to allow registrants to register anyone, even those outside their household.