Report Layout Problem

Hello

In an exsiting report I inserted another table in a matrix as you can see in the first picture
But I have a little space on the right and I cannot extend the table to the right (picture 2)
Belo this new table is already anonther table and it has not this spase on tge right (picture 3)
So my question : How can I do for the new table as for the existing one ?





Thanks