Use number generators
Number generators can be created and assigned only by the Administrator. If your Administrator has created a number generator, you can use it to assign part numbers automatically.
This tool helps during operations that require a name, such as Save or Rename. Number generators can name drawings, models, or Masterdata.
To use number generators,
1. If your administrator has created a number generator, you will see 
in the operation dialog box.
in the operation dialog box.2. Click . Creo Elements/Direct Model Manager generates a name.
. Creo Elements/Direct Model Manager generates a name.3. Once generated, you may manually edit the name, if you have permission from the Administrator.