Is possible. Please change from the following.
How to create
Setting "Employee"＞Employee settings > [Display]> [Edit]> Basic information " Employee code」
Note
- If you change the employee code, the login ID of the target person will also be changed automatically.
The ID is automatically generated according to the rule "Company code + 3 + Employee code".
- Employee code can only be manually operated on the management screen. It can be changed.
It is not possible to change all at once by CSV import.