[Innovus] How to relative place 2 standard cells abut?

Hi all,

I have a placement requirement for the synchronizer flops that 2 flops of synchronizer block must be placed abut as below:

There are so many synchronizer blocks in my design so I cannot place the flops manually. 

Is there any way to tell INNOVUS to place the synchronizer flops as above pattern automatically (like ICC2 relative placement)?

Many thanks