When changes are made to documents, Geneious Prime will automatically record the current user's username into the 'Modified By" metadata field of the altered document. Geneious Prime gets this name from the operating system, but you can change or customize this value within Geneious Prime. To do so, go to Tools -> Preferences -> General tab and click on the "Advanced" button. In the filter field, start typing "username" to find the History.username setting. Double click to edit the value as needed.