If you are a parent or guardian using a single ApplyWeb account to apply to for more than one child, you will need to fill out each application form and submit it individually before you can start a new one. It isn't possible to work on applications for two different children simultaneously, unless you create more than one account. However if you do so, note that you'll need to use different email addresses for each account, as only one account can be attached to a given email address.
Using One Account for Multiple Applicants (Oaks Christian and Campbell Hall)
ApplyWeb Technical Support