Be sure your employees are using the TRADES section from their mobile menu – NOT the SCHEDULES section. It’s possible they are not seeing the option to pick up shifts because they are not in the trades section.
Also note that employees can only see shifts for Positions they can work on Published weeks.
If this is not the issue, please send more details on the particular employee having trouble, the shift details, and a screenshot if possible to firstname.lastname@example.org and we’ll be happy to investigate.
employees having trouble submitting trades through the W2W app