Hi

First thing to decide is to use either MPI or Profibus communications. Looking at your Netpro screen dump you have setup a MPI subnet.

The next thing to decide is whether to integrate the HMI project with you PLC project. Integration has many benefits so I would recommend this.

Once you decided on intergration thensimply add a HMI Station to your project, configure the hardware configuration of the station and then start to configure your HMI in flex.

Pretty simplistic explanation - please ask if you need more help or get stuck with what I have said