Arranging Items in Columns or Grids (continued)
maxColumns: The maximum number of columns to display the children components. The default is 3 (2 on PDAs). For nested panel form layout components, the inner component’s maxColumns value is always 1.
The row-column split is based solely on the number of rendered children and not on their size. If the number of rendered children does not fit in the number of rows and columns specified, ADF Faces automatically increases the number of rows to accommodate the number of children.
To add content below the children input components, insert the desired component into the footer facet of af:panelFormLayout. Facets accept only one child. If you have to insert more than one footer child, use af:panelGroupLayout or af:group to wrap the footer children.