Can’t Find Manage Option for Manage Item by Batch/Serial

Have you ever find, that there’s no option for change manage item with batch or serial number on Item Master Data menu? Expectation – Option for ‘Manage Item By’ Here’s the scenario: You have few items that you want to add, and that items will be managed by Batch. (or you can use Data Transfer Workbench) Open Item Master Data, on Add mode, you already fill the details, but, on General Tab, you can’t find any option for set “Manage Item By”. Your Screen But, that item must be set managed by batch (“ManBtchNum” = Yes). How to find and