To display the Widgets, click go to Inventory > Devices, click on Customize at the top right of the dashboard. Click on the right arrow all the way until the last section, which will contain the 4 VMWare Widgets. Click Install on each one that is desired:

The VMWare Device report Widget contains shortcuts to some useful reports, the other widgets contain graphics about the VMWare items that are in Inventory:

To add VMWare items to Inventory, go to Inventory > Devices > Choose Action > New > Agentless Device. For connection type, select VMWare, and fill out the other fields.