If you notice that you created the same contact in CentralPlanner twice you can merge them into a single contact. So instead of deleting one......

You can find all your guests by clicking the button Contacts. In case you want to add a new contact, it happens either automatically with......

Select the tab Contacts where all your guests are listed. To edit contacts or complete them with more details you can click directly on the......

To delete a contact, go to the tab Contacts and choose the contact you want to remove. Click edit contact and then delete contact on......