StreamText.Net allows you to change writers during a live event. To do this you will need to use the event control which is listed under actions for a live event on the user dashboard. The event control has two buttons, "stop event" and "change writer" . If you click on the change writer button you will see a window that allows you to select a new writer and parsing format. Once you do this you will notice in the event control display the new user will be listed as connected to the event. Their output will now be displayed in the event.
Some items to consider are how you will do the change. Typically the writer taking over the event will be the one making the change over. The writer taking over will start the connector and get ready just like any normal event. Then they will login and open the event control for the event. Note that this is only possible if they have permission to "manage events" otherwise they will not see the event listed. Typically a writer can only view events that are originally scheduled for them. To add this permission you will need to edit their user details under the staff link. The roles are listed at the bottom of the edit user screen. Another option is to have the change made by a operations person who opens the event control and makes the change over.