Make it easy to spot the organisers
If somebody has a question, a concern, or wants to talk about the code of conduct, they need to find an organiser. Make them easy to spot.
Possible approaches include brightly coloured, branded t-shirts, or different lanyards from everyone else.
If you have places that are continuously staffed during conference hours (for example, the registration desk), make sure you tell people. It may not always be the most convenient, but it’s good to know that fallback exists.
If you’re using branded t-shirts, make sure you get them in appropriate shapes and sizes. Don’t be the conference that only bought men’s t-shirts for a mixed group of organisers.