Oxen allows users to stake their oxen by running service nodes which support the Oxen Network. To run a service node an operator is required to stake 15,000 oxen which they can either contribute the full amount or share the burden between multiple contributors to reduce the amount required individually.
This guide does not explain how to set up a service node, instead it explains for non-technical users how they can contribute to a service node which is run by a separate operator, allowing them to share in the rewards earned by that service node.