Formal:
* The conference was held under the auspices of the United Nations.
* The charity event was organized under the auspices of the local Rotary Club.
* The research project was conducted under the auspices of the university's science department.
Informal:
* The neighborhood block party was held under the auspices of the community association.
* The art exhibition was presented under the auspices of the local art gallery.
* The concert was a huge success, thanks to the auspices of the band's management.
Remember: "Auspices" usually refers to the patronage, sponsorship, or support of an organization or individual.