https://www.epo.org/en/service-support/faq/law-practice/list-professional-representatives-entry/i-will-soon-be-moving-new

I will soon be moving to a new job. Should I request entry now or should I wait until I have started at my new place of work?

You can request entry on the list of professional representatives with the address of your current employer and request a change of address at a later date by following the instructions in the Law & practice section