transfer of h1b from consultant to my current company

I am Working in a company ,I am currently on OPT.Got H1B through an external consultant(currently in RFE).I would like to transfer my H1b from consultant to my current company (this OCT 1).Is this possible and how?

It is only possible after it has been approved. While it is still pending (RFE etc), another employer cannot use it for cap-exempt filing purpose.