We have implemented a new way of grouping crew in the Crew Calendar panel. Right now - apart from grouping by a position type - it is also possible to group crew by the Aircraft.

In a section Fleet edit an aircraft profile, go to a tab Crew and in a field Preferred crew choose crew members who have ratings on this particular type and can be assign to it.

The selected crew members will show in 'Crew Calendar' panel, if in 3-dot filter (top-right corner of the page) the grouping is switched to 'by Aircraft'.