I was retiring some nodes (that may be of use somehow later on) to a "reserve" flow and wished to disable each node. With all nodes selected I tried to right click both with and without the shift key in case there is a way. I also read Selection : Node-RED but no joy.
However I solved my problem by simply disabling the flow having thought "you can disable a node, so why not a flow"? Very logical. Kudos to the developers
But, it might be still useful to do a single action (e.g. regex search and replace of data) on multiple nodes selected as a group. Is this possible? Is it worth a feature request if not?