Test management software is used to evaluate the permanence and functionality of technical systems. These systems also support documenting tests and evaluations. This thesis describes the implementation of a report template editing tool within an existing testing suite. The tool – TDR Template Editor (TDRTE) - was developed using SpringMVC, Hibernate, and PostgreSQL in Java, Javascript, JSP and JSTL. TDRTE provides a step-by-step editor for editing and creating complete report templates. A separate editor for calculating derived test values from measurement data was also developed.