In order for parents to be able to access the Parent Portal certain criteria must be met. The parent will need to have a valid email address, be authorised by the school (via the email portal authentication process) and have 'online access' set against a pupil.
How to set online access
To set online access at an individual pupil level, head to the Family tab from the pupil profile to display a list of contacts.
Next to each contact will be some Access options:
Selecting 'online access' will allow the contact to access the pupil record in the Portal once authenticated.
This can also be set in bulk from Admin > Advanced using the 'Online Access Setter'. This will flag the contacts of pupils (dependent upon your Pupil filter selection) 'online access' based on either 'first priority' or 'responsibility'.
How to send Parent Portal email invites
With online access set, invites need to be sent out to parents in order to 'authenticate' their account. The email will contain further links to allow parents to select a Parent Portal password. Without this step being completed, a parent or carer will not be able to access the Portal
To send the authentication email out to individual contacts, search for the parent using the search bar and on the search results screen, underneath the contact section select the 
button to send an Portal invitation.
To send the authentication email out en masse, head to Admin > Advanced > Parents and locate 'Send Parent Portal Invite to Contacts'
This routine will send an email to any contact that has online access set but has yet to successfully set up an account on either the Portal.
