How to intergrate a clip with a alpha chanel of another clip!

[VolareCantare]

How to intergrate a clip with a alpha chanel information of another clip ?!

I exported a clip with 'Alpha Chanel only'(Prores 4444 XQ + Alpha) in premiere pro, and

 I want to intergrate this alpha chanel information to another clip.

I don't know how,,

Plz help me! 

[Ann Bens]

Not sure what you mean by intergrate?

Put the alpha clip over the other clip and export to desired format.

[Richard M Knight]

Perhaps the Track Matte effect.