How do i align bottom grids of ceiling with reference with linked cad file?

Hi there,
I want to align bottom grids of ceilings with reference with linked cad file. As level is to big, it would take a lot of hours only to align grids (horizontal & vertical), is there any dynamo script for do the same thing in a single minute?

It’s not clear what you are trying to accomplish, at least not to me.

Can you provide screen shots?

As you can see… i have created ceiling with reference with linked cad file. screenshot shows only one room,however there’s hundreds of identical rooms in same floor. issue is that, ceiling’s bottom grids are not properly align with the room layout. if i try to align them manually, then it would take a complete day for me.
all i m asking that if there’s any script with that i can save my lots of hours to align only bottom grids.
thank you.