Is it possible to use the credentials in senhasegura.go while logged in with the third-party company account?

No, as both accesses require the use of the same credentials.

A feasible solution is to change the credential in the Active Directory (AD) to match the workstation’s credential. This will enable the client to use the same credential when logging into senhasegura via the web.

Alternatively, acquiring extra licenses for the third-party users is necessary, covering both senhasegura.go and PAM. Modifying the login format of senhasegura.go to utilize a different username is not feasible due to security concerns.