Can you specify which UN SC resolution authorizes this “Operation Prosperity Guardian”?

I also looked up the website for CMF (Combined Maritime Forces) and this is on their about page: https://combinedmaritimeforces.com/about/

CMF has five Combined Task Forces:

• CTF 150 (Maritime Security Operations outside the Arabian Gulf)
• CTF 151 (Counter Piracy)
• CTF 152 (Maritime Security Operations inside the Arabian Gulf)
• CTF 153 (Red Sea Maritime Security)
• CTF 154 (Maritime Security Training)

CMF has 39 member nations: Australia, Bahrain, Belgium, Brazil, Canada, Denmark, Djibouti, Egypt, France, Germany, Greece, India, Iraq, Italy, Japan, Jordan, Kenya, Republic of Korea, Kuwait, Malaysia, the Netherlands, New Zealand, Norway, Oman, Pakistan, the Philippines, Portugal, Qatar, Saudi Arabia, Seychelles, Singapore, Spain, Sri Lanka, Thailand, Türkiye, UAE, United Kingdom, United States, and Yemen.

I’m not sure how China or the UN is related to this operation at all, when this is the US DoD’s statement: https://www.defense.gov/News/Releases/Release/Article/3621110/statement-from-secretary-of-defense-lloyd-j-austin-iii-on-ensuring-freedom-of-n/

The recent escalation in reckless Houthi attacks originating from Yemen threatens the free flow of commerce, endangers innocent mariners, and violates international law. The Red Sea is a critical waterway that has been essential to freedom of navigation and a major commercial corridor that facilitates international trade. Countries that seek to uphold the foundational principle of freedom of navigation must come together to tackle the challenge posed by this non-state actor launching ballistic missiles and uncrewed aerial vehicles (UAVs) at merchant vessels from many nations lawfully transiting international waters.

This is an international challenge that demands collective action. Therefore, today I am announcing the establishment of Operation Prosperity Guardian, an important new multinational security initiative under the umbrella of the Combined Maritime Forces and the leadership of its Task Force 153, which focuses on security in the Red Sea.

Operation Prosperity Guardian is bringing together multiple countries to include the United Kingdom, Bahrain, Canada, France, Italy, Netherlands, Norway, Seychelles and Spain, to jointly address security challenges in the southern Red Sea and the Gulf of Aden, with the goal of ensuring freedom of navigation for all countries and bolstering regional security and prosperity.