Configuration of cloud services is described in Cloud Services - Authorization.
Summary ensemble data can be accessed from SUMO. ResInsight will store the required information to the data source, and fetch data from the cloud during project import.
From the right-click menu of Wells, select Import Well Paths from OSDU. A wizard will be displayed where field and well can be selected for import.
The imported well path will store required information to the location in OSDU, and the well path trajectory will be fethed during project import.