How to keep multiple data tables having fixed size data in the same page on runtime

I have a report where in I have a combination of matrix ,table data regions.

The problem what I am facing is that the data tables dont remain fixed in thier position and they tend to move down.

For e,g table 1 and table 2  are on the same page in design time side by side (right and left)however during the runtime the table1 is pushed down and table2 is at its position .

Now how can I keep them all fixed in thier same position. Most of the tables have fixed size rows  and some who have high size of rows have been put at the end .

What settings we can set?

Mudassar