You can refer to this Technical Documentation for the steps:

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Thank you, we were trying to avoid the no password scenario. That doc suggests modifying the sudoers file to allow “executed as root without requiring a password (NOPASSWD)”

​@Howard i believe what he is asking is if the PRA works like “senhasegura” where we put “sudo su” and the software auto-inject the credentials password, the way its being implemented on the doc, is more about we disabling the password necessity for the injected account. 

Its more a internal solution, than a true auto-inject made from PRA. 

That ideia was always a big doubt on my mind and with your answer now its more clear to me, thanks!