Tweet on behalf of other users?

[doohab]

I have 3 authenticated accounts. But it always tweet for one of them (the developer account) not the others. How to make it tweet for them?

app.post('/tweet', async (req, res) => {

    const client = new Twitter({
        consumer_key: api_key,
        consumer_secret: api_key_secret,
        access_token_key: access_token,
        access_token_secret: access_token_secret
    });

    await client.post("statuses/update", {
      status: "What is this?"
    }).catch(console.error);

    res.sendStatus(200)
});