A general description of the plugin can be found at Help/Plugin/RovasConnector

To use the plugin, you must have an account in Rovas. Conveniently, Rovas provides an option to register with one of several OpenID identity providers, including Openstreetmap.

From the Rovas API pane of ​your profile, copy the API key and API token into the similarly named fields in the Rovas Connector plugin configuration page. Click a checkbox to confirm that you are not paid by a firm for your JOSM work. The Timer tolerance setting in the plugin preferences determines the length of idle time between user actions that is counted as active. The Project ID field will typically be left with the default value.