If you need to view specific information in your cards, you can change the Gantt layout or add a filter.
By clicking Set layout on the top menu, a dropdown list will appear. You can use this to change the way cards are grouped. The default is by list, but if you need to see what each member is doing for example, you can select list by member.
The same result could be achieved by clicking Filter & Settings, setting the first and second level of the groups.