Hierarchical Select Doesn't allow multiple vocabularies in drupal7 Hierarchical Select I have taxonomy vocabularies:

For example 

Products, systems and Support

Each vocabulary has 2 terms:

Products -> product1, product2

systems -> systems 1, systems 2

Support -> support1, support2

I am using Hierarchical Select as a field to select this vocabularies.

But with Hierarchical Select ,it is defaulting to only one vocabulary.

Please let me know how to select terms from multiple vocabularies while creating nodes and alternate to Hierarchical Select.
You can't I'm afraid; it's actually a limitation of the taxonomy term field type, not of Hierarchical Select.

You can only ever choose one vocabulary per term reference field, regardless of the widget you're using. For example, this is what the field settings page looks like when adding a bog standard term ref field on a Drupal install that doesn't even have HS installed:



As you can see you only have the option to choose one vocabulary.