Move particles from one object volume to another object volume?

[cowspot]

Can anybody please help me with how to move particles from one birth object volume to another object volume?

I can move particles from one object surface to another. (but not to volume)

I'd also like to be able to slow the particles down to a stop when they land on the second object.-----do this in a natural looking slightly random way.

Also have the possibility of them moving onwards from this event to another object.

Any help would be greatly appreciated.

Thanks

I've searched through here and the web and just can't find this.