When viewing shifts in the future, the Sortable List view also includes a special Analyze Shifts button that allows you to see if any of the assigned shifts conflict with:
Conflicts could occur if employees changes their preferences after you have created the schedule or if a manager has manually assigned a shift after being warned of a conflict, or if the employee picks up a shift off the Tradeboard.
It can be useful to Analyze Shifts before publishing to check for any conflicts due to last minute changes to employee preferences or constraints.
Your assigned shifts will be displayed with their corresponding status icon compared to the various preferences and constraints that are currently set. Conflicts will be listed at the top of the list.