Here are the steps for the inspections process related to undeclared sites[10]:
Request for clarification (Day 0): If the IAEA has concerns about undeclared nuclear activities or sites, or any potential violations of the agreement, it will first provide Iran the basis for such concerns and request clarification.
Request for access (Days 1-14): If Irans explanations do not satisfy the IAEA, the Agency may submit a request to access the suspicious sites in question. The IAEA will provide the reasons for access in writing and make available any relevant information. Within 14 days, Iran and the IAEA must either 1) agree on the procedures to inspect the sites in question, or 2) resolve the IAEAs concerns by alternative arrangements without inspections.
Dispute resolution (Days 15-21): If Iran and the IAEA cannot reach a resolution within 14 days of the IAEAs request for access, the issue will be brought before the Joint Commission established by the agreement for dispute resolution. A consensus of 5 of the 8 members of the Joint Commission (the P5+1 nations, plus Iran, plus the EU High Representative) would issue a ruling and determine the course of action within 7 days. This means, Iran, China, and Russia could not block a consensus without the support of one Western country.
Implementation (Days 22-24): Following the determination of the Joint Commission, Iran would have 3 additional days to implement the decision.