+Options are passed as a hashref or a list. Available options are:
+
+=over 4
+
+=item null
+
+The frament will also allow the selection of null agentnums.
+
+=item null_right
+
+The fragment will also allow the selection of null agentnums if the current
+user has the provided access right
+
+=item table
+
+Optional table name in which agentnum is being checked. Sometimes required to
+resolve 'column reference "agentnum" is ambiguous' errors.
+
+=back
+