To add additional household members to an existing volunteer account; either repeat the process from Add User and select to connect them to an existing family rather than a new family or open the volunteer record and select Family Members from the left hand menu.
Select the Add icon in the top right.
Enter the details of the family member.
If the family member is also going to be a volunteer, select Yes in the Volunteer? field.
For a volunteer, add the Email address, Username and Contact details.
Press Submit to save.