The Browse tab is selected initially (see picture in the Point Editor), and you are given an opportunity to browse the network, the OPC servers present, and the nodes in them. You can simply select the desired node from the tree or list. 

If yo do not see the entities you are looking for, you can enter some of them manually. For example, you can enter Computer or Host, and OPC Server or OPC-UA Endpoint.

You can also add "Index Range List (OPC-UA)" nodes in the Point Editor. This makes it easier to specify points with index ranges. You do not have to switch into the Properties tab, click "..." in the "Index Range List" row, and then "Add" each index range and enter its index values. Instead, simply "Add" the "Index Range List (OPC-UA)" under any OPC UA node, and then type in the required index range(s), e.g. "5:10".

 

The Browse tab also has a Legend pane, allowing the user to view the list of node icons used in the control, and their meaning (descriptions). The Legend pane can be turned off and on from the Layout menu of the browse control.