CorporateCharts can be used to select a location for data labels in charts. 

Module is located here:

...\ModuleLibrary\CorporateCharts\01c_nocontext_Specific Chart Elements

Add data labels/edit position

The following command enables to add data labels and change the data label position.

<Cmd case="CorporateCharts:datalabels_pos" val="xx" />

Parameters

val

inside

Will place data labels inside at the end. 

center

Will place data labels inside at center.

inbase

Will place data labels inside in base.

outside

Will place data labels outside at the end. 

Remove data labels

The following command allows to remove data labels in selected chart. 

<Cmd case="CorporateCharts:datalabels_remove"/>