Chart Selection of Data Tool Missing
I have already added data to a chart months ago, now I want to add a few more columns but I don't get the type of selection tool for the columns as shown in the image -- all i can do is select a cell and drag down the columns as shown in the 2nd image with red selected column -- but without seeing / getting the coloured dot selection tool that allows you to plot rows as a series or plot as a column as a series?
Cheers.