You will find schedules of rates and bank account information on the homepage of each judicial level, for there will be charges for the delivery of documents, a request for composition agreements, authorisation for a payment moratorium, a court order for assessors, etc.
Below, you will find links to the district courts' application pages where you can electronically obtain a certificate of authority to manage an estate
Héraðsdómur Norðurlands vestra
Héraðsdómur Norðurlands eystra