Signing DMG

I’m tring to sign a dmg file
I’m creating a new configuration file.
When i press on the signing dropdown, i do not see any options.
I have installed certificates in my apple key chain.
What am i doing wrong?

The Signing menu only shows identities that are valid for signing a disk image. Please make sure that your keychain contains a “Developer ID Application” identity. There is more information about this kind of identity here.