With column layouts, each column starts out with an equal percentage of the overall workspace width. If you add or delete columns, the width is adjusted automatically. See Add or Delete Rows and Columns to a Layout for more information.

You can manually control the percentage of total width for each column. See Resize Apps in Column or Desktop Layouts for instructions.

You can change the height of individual apps, as needed, once they are placed in a column. See Resize Apps in Column or Desktop Layouts for instructions.

Table layouts for workspaces in version 3.5 or greater also use an equal percentage of the overall width and height of the workspace to define the width of columns and the height of rows. If you add or delete rows or columns, width and height is adjusted automatically. See Add or Delete Rows and Columns to a Layout for more information.

You cannot directly change width and height percentages in table layouts, but you can use spanning to provide more height or width for specific apps or gadgets. See Change Cell Width or Height with Spanning in Table Layouts. You can also increase the number of rows or columns to get a finer grained grid to support tighter or more flexible layouts. See Adding Columns or Rows and Increasing the Maximum Number of Columns or Rows for more information.