I have added new invitees to my group but their name does not appear in the add to group list

When you add new members to a group, you may see a list of names of Strengths Profile members you have previously invited.
They will be added to the group once you have pressed finish.
This allows you to select members you have already invited and invite new members without the view becoming confusing.
Don't worry if you forget to add somebody because you cannot see who you have invited so far, you can always add them to the group.
Click Finish when you are done which will generate the group.

Apologies