Hello Douglas,
you can alocate preliminary numbers to your members witch will give a temporary number untill you detail your members on a page. This way you can send a kiss file before detailing your members.
Once your pieces are detailed, you will still be able to to see the preliminary number within your model and be able to cordinate with the client this way.
This can also be used to creat external list before completing your number method by detailing the members.
Best Regards,
Tommy Moussis