Using multiple instances of the MDB is similar to using multiple instances of the MPLAB X IDE. Some set up is required before using hardware tools (PICkit 3, etc.) with an instance of the MDB. Refer to the MPLAB X IDE online help “Before You Begin,” and “Launch Multiple Instances of the IDE” for instructions on setting up the hardware tools and formatting the MCHPDEFPORT file. After any hardware tool setup is complete (to assign the appropriate driver for the tool), an instance of the MDB may be invoked from the bin directory of the installation.