The process of having each crew member pin into the foreman device each morning builds their crew for the day....Is there a challenge your team is experiencing? Or just a preference for the way the old system worked?

As David said there is a way for them to “create their crew” 

the crew leader needs to open the app & log in. They then clock in. They then log out (which does not clock them out). They can now give the phone to the other team members & have them enter their pin (found in the User Management tab of the administration screen on web). After they enter their pin they can clock in for the day. The crew leader can clock out everyone at the end of the day. 
 

https://care.youraspire.com/en/articles/8490524-404-aspire-mobile-for-crew-members