OfficeTalk lets you change the width of the cells in the Group Weekly View so that you can see any appointments whose text is longer than the width of the cell. You can do this by placing the mouse over the vertical line dividing each cell header and then pressing the left mouse button and dragging the field to be wider or thinner as appropriate.
You can simultaneously change the width of all the cells together by changing the width of one cell whilst holding down the Ctrl key. The width of all the other cells will change to match the width of the cell that you change.