Creating a Pool Gauge
You can deploy the gauge directly through the UI simply by posting the address: https://classic.curve.fi/factory/create_gauge
Once you've created your gauge, you need to submit it to the DAO for a vote. https://classic.curve.fi/factory/create_vote
The address that submits must have 2500 veCRV in order to create a vote.
Once the gauge has been submitted, politics take over. You may want to visit the governance forum and explain why your pool should be made eligible for rewards.