The invention is directed to an operation-control node (100) for controlling operation of one or more external lighting devices (101, 103) via a local-area wireless communication network. The operation-control node is configured to receive from a user-input device (105) input signals (I) indicative of respective operation-control data forming a list of settings of a control parameter values of a lighting control parameter for sequentially controlling operation of a lighting device. The operation-control node is configured to determine a setting update for updating the control parameter value and provide via the local-area wireless communication network an output message (O) comprising the setting update only while an output-control information that depends on an ascertained network-capacity information indicative of an expected network capacity available for transmitting messages within the local-area wireless communication network indicates so, thus reducing the risk of exceeding the network capacity when controlling operation of the lighting devices.