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The teamwork research defines several important concepts regarding the design of agents so that they are in fact able to play as members of a collaborative group. Currently such research has been focused on multiagent domains, where agents have full autonomy to take decisions. However this model is not common in real applications where humans may wish to be in control for critical decisions. This paper discusses the use of a constraint-based ontology to create models of mixed-initiative interaction for teamworks. Furthermore we show a practical application on how hierarchical users can use this approach during operations in critical domains.