The manage system constants (System Configuration) section is available to users with system administrator access only.
Not all system values are editable.
To edit a system value, click on the “Edit” button adjacent the value. The form will change to allow you to enter this information. Update the details as necessary and then click the “Update” button to save the changes. Click the “Cancel” button to return to the list of system constants and cancel any changes that have been made.