Feedback from SIA Fudiko: now if client filters people by position, he will see employees, who can work in that position. But he would like to see people who actually worked (or do have planned shifts) in this position. E.g. client's employee can work as baker or seller, he has both these positions ticked. But this month this employee worked only as baker, so when client filters out seller, he doesn't want to see that employee that worked as baker (even he is allowed to work as seller). This works with locations, but with positions it's different logic.