There are very limited number of widgets in Process Intelligence. There is no OLAP table, no pie chart or no donut chart
These are not available at the moment, but the developers are working on them for the future.
Please visit the Signaivo PI Documentation to see what is available atm as it is always being updated.
KBA , BPI-SIG-PI-DI , Data Import for SAP Signavio Process Intelligence , How To