How to add atc to an airport

I’ve recently done a airport for msfs NZHN and the airport and the defult
dosen’t have any atc tower. I’ve tried various ways that I have searched on
the net to add the atc but nothing works… How do you guys at atc into a
airport I’ve tried just entering it directly into the actual sdk then I’ve
tried adding it manually as shown in this photo

Hello @fras444 , By default NZHN has already a list of frequencies as you can
see on this screenshoot:

you sure you didn’t check “deleteAllFrequencies” and put your scenery in the
community by mistake ? I suggest you to make sure that your community folder
is empty and to check for any error in the console when building your project.
Regards, Boris