It is a permit that lets an eligible revoked driver keep driving on a restricted basis with a certified breath-testing device installed in the vehicle. Proof of financial responsibility is part of qualifying, so the insurance step comes first.
More detail
Eligibility depends on the specific revocation, which is why the DMV notice and, where the case warrants it, a lawyer are the right sources rather than general guidance. What is consistent is the sequencing. The permit will not issue without proof of financial responsibility on file, so the order is policy, then certificate, then permit application, then device installation. Drivers who apply first and arrange insurance second lose weeks. In this market the permit carries more weight than it might elsewhere: Sarpy County households connected to Offutt, Fremont commuters running US 275 into the metro, and second-shift workers in Columbus and Grand Island generally have no workable alternative to driving, so the permit is often the difference between keeping a job and not.