If a replacement has been found, you need to add his/her details (including the IP address) via the administration interface. This can be done via the 'My administrator account details' in the 'Registration maintenance' section of the administration interface homepage. This will display a form where personal details can be added and saved. Please note that these details will not be published online and will be used by Athens for administrative purposes.
To change the contact details that are published on the list of organisations, you will need to go to ' Organisation contact details' in the 'Registration maintenance' section of the administration interface homepage. This will display a form where details can be altered and saved.