The phrase "appropriate circumstances" means the right or suitable situations or conditions for something to happen or be considered acceptable. Full definition
Lastly, the court has a discretion to extend time limits in appropriate circumstances without the necessity of a separate application: Rule 22 - 4 (2). (bc-injury-law.com)
It also has a policy to provide for the reduction, and under appropriate circumstances for the waiver, of civil penalties for violations of a statutory or regulatory requirement by a small entity. (transportation.gov)
Your rights notwithstanding, the government has the power to do such things under appropriate circumstances. (law.stackexchange.com)