Download setup file and run it on one of the servers in your SharePoint 2013 farm as Farm Administrator. Follow the wizard steps.
Go to your application. Select Site Settings item in the root of the site collection in Site Actions menu. Choose Site collection features in Site Collection Administration section:
Activate Plumsail Org Chart feature if it is not activated.
Adding Web Part to a page
Navigate to the page where you want to install your Web part.
Click Edit at the SharePoint 2013 site ribbon.
Choose the place where you wish to add your web part and in the Insert tab click Plumsail Org Chart.
Click Save at the page ribbon. Message with link to configuration wizard will appear in Org Chart Web part: