Function direct_transfer 

pub fn direct_transfer(
    owner: &Pubkey,
    campaign_id: &[u8; 32],
    campaign: &Pubkey,
    config: &Pubkey,
    fee_account: &Pubkey,
    treasury: &Pubkey,
    treasury_tokens: &Pubkey,
    mint: &Pubkey,
    token_program: &Pubkey,
    associated_token_program: &Pubkey,
    system_program: &Pubkey,
    transfers: Vec<(Pubkey, u64)>,
) -> Result<Instruction, ProgramError>

Create an instruction to transfer tokens directly to recipients in batches