Modeling glazing system with betweenglassblind shading control

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You could approach this using the Construction:ComplexFenestrationState object. The workflow would be the following:

• model two window states using LBNL's WINDOW (one with the shade fully up the other with the shade fully down) and export them as BSDF IDFs

• Create an EMS script to control when each fenestration state is activated, see the comment from the input output reference below

I doubt whether this workflow would work using designbuilder. But I think you could edit the idf that you create using design builder.

If there is more than one complex fenestration state, it will be controlled using the EMS actuator called “Surface” with the control type “Construction State” and the EMS input object called EnergyManagementSystem:ConstructionIndexVariable.