Use this setting to set the behavior of the right click. There are two options available: 

If Default context menu is set, a right click on the node will call the context menu that holds information about the node (node name and value) and displays two additional interaction options – hide the node or collapse the node. 

Choosing to hide a node will hide it, leaving all other nodes and links visible. Collapsing a node will hide this node and all other nodes that it is connected to.  Nodes that stay visible after collapsing a node and have been affected by this interaction, will have an expand interaction available in the context menu. 

If Power BI context menu is set, a right click on the node will display the default Power BI context menu.