It is a common practice in many scenarios to prepare the task list outside the system (such as in MS Excel. MS Project, Primavera etc.) WRENCH uses MS Excel as a common medium through which task can be imported. This means, what ever is the initial Project planning system used, if the schedule can be exported to an MS Excel, it can be imported into WRENCH. Similarly data from WRENCH can be exported to an MS Excel sheet. The date can be modified and then imported to WRENCH. There are different options available under the option Import/Export, they are: