Navigate to the Outputs section on the left-hand side.

Select Board Layout to generate the board layout.

Zoom in on the board layout to see the dimension values of the panels.

These values are rounded off according to the nearest dimension accuracy.

Click on the Settings option.

Look for the Dimension Accuracy setting, which is set to 1 mm by default.

Change the dimension accuracy as needed. For example, set it to 0.1 mm.

Regenerate the board layout to apply the new dimension accuracy setting.

After regeneration, zoom in on the board layout again to verify the new dimension accuracy.

Ensure the dimension accuracy is accurately reflected.