Field help (MAJTYP) 

This field, which cannot be accessed, displays the update type for an employee.

Manual update
Manual update means that you have manually added an employee to the population using the Employee selection action or the Others tab of the Employee record.

If the update is a manual process, the employee can only be removed from the population in a manual way.
SEEINFO This deletion will impact the Employee record.

Automatic update
Automatic update means that you have used the update population functionality (Population update button in the action panel): the employees who meet the membership criteria defined in the Rule field are automatically upload in the table.

If the update is an automatic process, the deletion of the employee from the current population, which is performed in this function or the employee record, is only temporary. To permanently delete an employee from a population group, you should modify the membership criteria, then refresh the list.