What is IELTS part time speaking work classified under – can it be done as a Specialist in Humanities without applying for extra permission?

I just applied for a job as an IELTS speaking examiner on the side. I'm wondering if (assuming I get the role) I'd need to go to Shinagawa to get the 'permission to engage in activities other than those…' applied to my card, or whether I'm already able to do this kind of work on the side of working at an Eikaiwa, thanks!