For Non Lucrative visas, applicants must visit the Consulate twice.
They must provide originals and copies of the required documents at the first appointment. Once the permit is granted, the applicant must return to have the visa document added to the passport.
The Consulate shouldn’t keep your original passport, and, generally, the same applies to any original document you may need urgently. However, you should keep the original and leave the copy at the Consulate once they have ensured they are identical.
Some Consulates have altered the process by allowing submissions via post or email. In these cases, they may require original passports or notarized copies to be sent.