Flexible working may be here to stay, but getting people back into the office more often than not remains non-negotiable for many agency and media company bosses. But it's a tricky tightrope to walk and a divisive issue: Can you mandate returning to the office three days a week – or more – and not start a riot? In part two of our evolving world of work series, we asked those who have successfully hit an in-office default position – CEOs at Akcelo, This is Flow and Pedestrian Group – to explain their approach. You can find part one of this series here.