You can set the default look of each chart type (the way it appears when you first add the chart on the slide canvas). Default attributes must be set individually for each chart type.
In the slide navigator, create a new slide.
If you’re setting up default attributes for a particular master slide (rather than all slides in the current theme), click Masters in the toolbar and choose the master slide.
Place a chart on the slide. See Adding a New Chart and Entering Your Data for instructions.
Select the chart, and then set its attributes.
See Changing a Chart from One Type to Another to learn how to change a chart’s type.
See Formatting Charts to learn how to resize a chart, rotate it, and set other attributes that charts have in common.
To learn how to customize particular attributes of pie charts, bar charts, and other chart types, see the topics particular to each chart type.
Repeat steps 3 and 4 for each chart type you want to define a default for.
For each chart, select it and do one of the following:
To set the defaults for the current chart type for only the current master slide, choose Format > Advanced > “Define chart type for Current Master.”
To set the defaults for the current chart type for all master slides in the current theme, choose Format > Advanced > “Define chart type for All Masters.”
If you don’t want the charts on the slide, delete them.