How to apply wall load, where the wall is not supported by beam element.

Dear Sir/Madam,

I wish to apply wall load in the form of member load but in some places in my model I don't want to put any member under it. I have given Dead load and Live load in the form of Floor Load and didn't model any plates. Floor Diaphragm action is provided by Master/ Slave Commands for each and every floor. All I know about Staad is that, I have only two options:

1) I have to remodel using plates and apply the wall load in the form of PARTIAL PRESSURE on plate.

2) Model Beam Member wherever I want to apply wall load and make them INACTIVE using Specifications OR use PROPERTY REDUCTION FACTOR of 0.0001.

I want to know if I am correct or any other option available in STAAD.

Thanks in advance

Mr. Kaushal Aggarwal