There are two main ways to customize chart elements in Excel:

1. Using the Chart Elements Button:

1. Click on your chart to make it the active object.
2. On the ribbon, under the "Chart Tools" tab (which appears when you select a chart), locate the "Chart Elements" button. It looks like a chart with a box around it.
3. Clicking this button displays a dropdown menu with various chart elements you can add or remove. These elements typically include:
- Chart Title
- Axis Titles (Horizontal and Vertical)
- Data Labels (values displayed on data points)
- Legend
- Gridlines
- Data Table (displays the underlying data used in the chart)

Simply check or uncheck the boxes next to the elements you want to show or hide.

2. Formatting Chart Elements Directly:

1. Click on the specific chart element you want to format (e.g., chart title, data label, legend box).
2. Once selected, formatting options for that element will appear in the ribbon under the "Chart Tools" tab (depending on the element, you might see options under the "Format" or "Layout" tabs).
3. You can customize various aspects of the element using these options, such as:
- Font size, color, and style for text elements (titles, labels).
- Fill color and border formatting for legend boxes and data points.
- Font size, position, and formatting for data labels.

Additional Tips:

* You can right-click on a chart element and choose "Format [Element Name]" for a more detailed formatting menu.
* Use the "Chart Styles" button on the ribbon to quickly apply pre-designed color schemes and formatting options to your entire chart.
* Experiment with different formatting options to create charts that are both informative and visually appealing for your audience.

By using these methods, you can take control of the appearance of your charts in Excel, making them more informative and visually engaging.