To mark a to-do as starred (favorite), firmly swipe over from left to right.
Starred to-dos will be shown on top of the 
To-Dos → Scheduled screen in case a respective Settings → Interface setting is on.
Mark a to-do as starred (favorite)
Get HelpGet HelpTo mark a to-do as starred (favorite), firmly swipe over from left to right.
Starred to-dos will be shown on top of the To-Dos → Scheduled screen in case a respective Settings → Interface setting is on.