Hi,
For title you can set alignment to be left, right or centered inside chart designer.
For moving labels inside slices you need to edit file pie_chart.vm this on path in your war of cockpit engine:
knowagecockpitengine\WEB-INF\classes\chart\templates\highcharts414
You need to search for line 467, and in dataLabels object to add this property:
distance: -60,
(-60 is example. minus wiil set labels in slice)