The Data Marker Properties dialog box is opened when you double click on a Data Marker or right-click on a data marker and select "Properties" from the pop-up menu which appears.
Display Marker Identifier: Selecting this checkbox adds the marker ID to the data marker label. The marker identifier is automatically assigned by the software.
Custom Label: Selecting this checkbox allows you to add your own text to the data marker label. Enter the desired text in the Label text entry box to the right.
Color: Click on this button to select what color you wish to use for data markers. A Select Color dialog box is opened which allows you to select a color. This color is used for the data marker symbol, and the label when it is displayed.
Display Data: Selecting this checkbox adds the x and y value of the data point to the data marker label. The data that will be displayed appears to the right of the checkbox.