Connecting with another Enterprise partner's node is done via the Partnershipssection of the node's UI. You click the Invite Partner button and select Enterprise Partner, then you input the Unique Node ID of the Enterprise Partner's node and click on the Invite Partner button. A request partnership request will be sent to the partner's node.
Select "Enterprise Partner" and enter their name & email
Conversely, to accept a connection request from another partner's node, refer to the Received Requests tab under Partnerships and click on the Accept button.
Once a partner connection is established, you can perform clean room operations with them.