This field indicates that the employee is only used for simple time registration during this activation.
There is a special type of license for these employees.
The Employee is limited to only registering Absence, Trigger and one IPC. The one IPC is specified in the field Only IPC (Job Id) on the JobManager Setup table.
See also
Reference
Employee Activate
JobManager Setup
This help includes both Dynamics NAV and Dynamics Business Central (BC). All references to NAV applies to both.