To create multiple pivot charts from one pivot table, you have to click on your pivot table:
Go to Analyze
section in Pivot Table Tools
Click on Pivot Chart
and choose the Chart Type:
To add another pivot chart from the same pivot table, you have to repeat the chart creation process again
and choose a different type of chart. You can also add multiple pivot charts by copy and paste functions, using Ctlr+C and Ctrl+V. Then you can click on the new chart with right mouse button and choose adifferent formatting.