When using Calc, how to label graphed lines in legend box?

LibreOffice 4.2, English, Calc

May be so?

Thanks. However, what I want to do is have the text contents of cells B1, C1, D1, etc. in the green bordered label box so that the label corresponds with the graphed data of B2:B6, C2:C6, D2:D6, etc.

Thanks. However, what I want to do is have the text contents of cells B1, C1, D1, etc. in the green bordered label box so that the label corresponds with the graphed data of B2:B6, C2:C6, D2:D6, etc.