'The recent set up of new collective addresses specifically for AFPEx has made this a bit easier, but they're not available for ATS messages such as DEL, CHG, DEP, ARR. You still have to enter these manually'
If you select the FPL and then go into 'View', you can then 'Operate FPL as' and then select the message type you need, e.g. CHG. This will pull all the addresses from the original FPL, rather than having to clunk the keys.