Fortiauthenticator with Google LDAP Client

Hello everyone,

I have configured Google LDAP with multiple domains in one organization. Fortiauthenticator connects to LDAP but I only have access to users in parent domain (I used this instruction). However, in this documentation i see that "If the user records fall under one directory, you can use Simple bind type. But Regular is required to allow a search for a user across multiple domains." My question is: Is it possible to configure regular bind type for Google LDAP client?

Miłosz