Node-RED block in Snap4City Microservice library node-red-contrib-snap4city-developer is "group-insert-entity">
    <p>It allows inserting an entity into a group</p>

    <h3>Inputs</h3>
    A JSON with these parameters:

    <dl class="message-properties">
        <dt>groupId
            <span class="property-type">number</span>
        </dt>
        <dd> the nome id of the group</dd>
		<dt>deviceId
            <span class="property-type">array</span>
        </dt>
        <dd> an array containing the elementNames of the entity to be inserted </dd>
    </dl>

    <p>An example of the JSON array filled with correct data for user delegation:</p>
    <pre>
{
"groupId": "idGroup",
"deviceId": ["elementName1","elementName2"]
}
    </pre>

    <h3>Outputs</h3>
    <dl class="message-properties">
        <dd> Returns an object containing the inserted entity </dd>
    </dl>

    <h3>Details</h3>
    <p>The node can receive a JSON with the parameters described in the Inputs section and with them generate the output JSON.
        If the values are not present in the input JSON, these are read by those in the configuration. If they are not present
        in either part, an error is generated for the necessary parameters.</p>