Change format tablix

Hi jaweher899  - if you only adjust the column widths inside the table, the container size stays the same and layout doesn’t shift.

Select the Table visual on the report canvas.

In the Format pane → Column headers:

Turn OFF Auto-size column width.

Hover over the header border between Column 2 and Column 3 inside the table visual.

Drag the border to:

Make Column 2 narrower

Make Column 3 wider

This resizes only the internal columns, not the visual’s outer bounding box.
The footer and other visuals stay in place.

Hope this helps.