Union of Join between 2 objects in composite providers

Hi Expers,

I am in BW 7.5 and my requirement is to create a union of (join of 2 infoproviders) in composite provider.

Example Union D01 (Join between D02 & M01)

How to perform this in BW modelling tool composite provider. I am always getting Join operation as my top node but I want union as my top node and below of union node I want join of 2 infoproviders.

I can able to join 2 infoproviders but unable to add a union on top of it. Please let me know how to achieve this.

The scenartio should be as follows

Union (D01)

     Join of (D02 & M01)

Thanks,

Saravanan.