An individual has emigrated under the GST, but they need to register ISD. Can they apply at present? What is procedure to proceed further?

There are some considerations and procedures to follow: Check eligibility, authorise a representative, obtain a valid PAN, register through a representative, file form GST REG-07, provide required documents, verification, and obtain GSTIN.
The procedures to proceed further are: Consult a tax professional, gather required documents, summit the application, monitor the status, and comply with GST regulations.