The Sidebar in the MacPractice window contains all of the nodes and items that pertain to the ability currently selected.
Resize the width of the sidebar by moving your cursor to the right edge of the panel and a double arrowed cursor will appear. Click and drag the edge to expand the sidebar to show more detailed information in columns. These columns can then be re-arranged by clicking the title of the column and dragging it to its desired location. The size of the columns can also be expanded or contracted and the column results can be sorted by clicking on the header.
Logging out of MacPractice will reset the size of the sidebar as well as the order and sorting of the columns. Check the Sidebar Preferences for other options.