Hi,
You can create multiple charts in a sheet but there are limitations on the charts that can be put in the same sheet.
For Ex: Below is a chart, that contains an area chart, bar chart, and line chart,
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You can create charts with one column and multiple rows ot the vice versa.
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Using common or relative column and rows would provide you better visualizing multi[ple charts.
Multiple charts in a sheet are created using 1 common field and other dimension or measure as per choice.
Hope it helps.