By clicking the ToTop icon (To T.), a selected crew member’s roster can be moved to the top of the Roster Gantt.
The icon can be found on the menu after right-clicking the crew member’s name.
The selected crew member will be highlighted in blue:
Alternatively, you can select any number of crew members by right-clicking any of them. After, click the To T. icon, which will move all of the selected crew members to the top of the Roster Gantt.