Whoever signs what he does is responsible, the cartographer signs in the drawing column, and the plotter signs in the drawing column. The auditor must be a registered engineer, and the auditor must be the chief engineer, each with his own responsibilities. Just like a clerk drafting a document, the section chief checks it and the director signs it. Typists, editors, examiners and approvers must all sign.

Just because you are not an assistant engineer, you can't be exempted from the visa for what you have done.