After you have configured the MicroBlaze processor, you can start to instantiate other IP that constitutes your design.
In the IP integrator canvas, right-click and select Add IP. You can use two built-in features of the IP integrator to complete the rest of the IP subsystem design: the Block Automation and Connection Automation features assist you with putting together a basic microprocessor system in the IP integrator and/or connecting ports to external I/O ports.