Reference:
Edit Standard FTP Address
Entry
FTP Server Administration
Options
This dialog provides a drop-down list of certificates that can be used by Beyond FTP to encrypt an SSL/TSL connection. This list includes only those certificates in the local computer certificate store with private keys. The current certificate, if any, is displayed in the Selected Certificate box. Green indicates that the certificate is in the store and accessible. Red indicates that the certificate is not in the store or does not have a key. You can copy certificates from your personal store or import new certificates using the Windows Certificate Import Wizard.