Ellie May,
With it's own EIN I'm assuming the club has it's own legal docs used for CIP verification. As the owner of the account, the "club" would have the transaction conducted by someone on it's behalf (checking blick 2C), and the "Entity" block would be checked. The conductor of the transaction would have block 2B checked (even if they are the "owner" of the club). Most owners are listed as Authorized signers on their business accounts. For block 20 (assuming the club exists as an entity) you would list whatever legal docs you have on file (in the "Other" block). The conductor would list the standard verification doc, usually a Driver's license in his/her own block 20. If the Club is listed with a person's SSN, then treat the club like a person and file the CTR on the owner. Block 8 would have the Club name information. In this case assuming the conductor is the owner of the account, you would check block 2a. Most club accounts have a SSN, so your relaying the EIN info is a little different and causing your confusion. If the club is it's own entity treat it like a business.