Yes, there is. As polley well noted, you can use boolean custom attributes provided by Adaxes. There are 25 of them (named CustomAttributeBoolean1 through CustomAttributeBoolean25). Such attributes are not stored in AD, but you can use them the same as any other attributes of AD objects. When adding fields for the attributes to forms for creating or editing users, you can select to display them as checkboxes. A ticked checkbox corresponds to the True value.
Then, you can create Business Rules triggered after creating/updating a user that would automatically perform certain actions if a certain boolean attribute is set to True. Finally, you can give the custom attributes your own names.
For information on how to add attributes to forms for creating or editing users, see step 6 in the following tutorial: http://www.adaxes.com/tutorials_WebInte ... tomization.
For an example of a Business Rule that adds a user to groups based on certain conditions, have a look at the following tutorial: http://www.adaxes.com/tutorials_Automat ... rtment.htm. You can use it as a guide.
For information on how to display attributes using custom names, see the following help article: http://www.adaxes.com/help/?HowDoI.Mana ... Names.html.