The 'forms' extension lets you combine different parameter selectors to update / modify your graph data. Update queries are predefined by the dashboard builder, and the user is limited to specifying the parameters for the query only.
See Form on how to create, configure, and use forms.
Keep in mind that data-altering forms require your Neo4j user to have write-access to the graph. Make sure you give access to a select group of power-users only.