Meaning of act for/on behalf of sb/sth In English

• 0 to represent a person, company, etc. in a court of law:

  • There are few exceptions to the rule that a solicitor may not act for both seller and buyer.

• 1 to represent a person, company, etc. or deal with their business for them:

  • The Council of Mortgage Lenders claims to act for 98% of lenders.

  • She was authorized by the Commission to act on its behalf.