Schnappy does allow parents to link their separate accounts for the same children.* This allows parents to make separate payments for the same items (including Flexi-Pay).
*The messaging, wallet and payment history sections of linked accounts are not shared and are completely private.
To link your account to your child/ren, just create a Schnappy account as normal and register your child. Schnappy will automatically see the child exists on the system and generates a Child Access Request and sends notification to the school and the parent who originally registered the child. When the details are checked and correct, you will then have the child/ren linked to your account by the administrators.