Setting under PARTadmin -> Category Roles -> Tab page General -> Display condition for part selection [Display condition for parts selection]
The directories and projects in the catalog index are colored green or semi-transparent according to the condition under Display condition for part selection [Display condition for parts selection]. See user "location" -> role "Aministrator".
The MECH1 role contains the following condition for the display condition for part selection [Display condition for parts selection]:
(LINKTABLE.ERP_PDM_NUMBER<>'') AND (ERPTABLE.MECH1='x')
- For a part to be displayed in green in the structure tree, it must have both an ERP number and the identifier 'x' in the MECH1 column. 
- For a directory to be displayed in green in the structure tree, it must contain at least one part that fulfills the condition. 
- If the condition is not met, the project/directory is displayed semi-transparently. 
Details can be found under Section 7.1.3, “ Display condition for part selection - Colored catalog index - plinkgroups.cfg -> Block [Role_name] -> Key "CONDITIONTREE" ”.
When the preferred rows function is activated using the Preferred rows on/off button button, all semi-transparent projects and directories are hidden.
 button, all semi-transparent projects and directories are hidden.


![[Note]](https://webapi.partcommunity.com/service/help/latest/pages/cn/3dfindit/doc/images/note.png)
