Stuck after creating/importing a topology in Fog Gui.

[i-saksham]

I used the Fog Gui to create a topology but when I click on Execution there is no change and the Fog Analyst Panel does not appear? The run simulation button is grayed out and if I do enable it, it asks for a deployment file and I'm not exactly sure what a deployment file is. Could someone please help me out wit the basic steps that are required to simulate a topology?

[ShubhamTripathi1]

Could you help me regarding ifogsim?