Hello Vadym,
Please make sure that Parallel reporting is not turned off (System > Optional Features > Performance tab). In case that does not solve the problem please reach back to me here.
You can also check this Hansa Manuals post for more information about this feature:
http://www.hansamanuals.com/main/english/mailnumber___58462/theconf___566/manuals/levelzero___58461/version___71/hwconvindex.htm
Best Regards,
David D.
HansaWorld Support