How to set a User as Worker

Step 1: Go to system administrator responsibility

Step 2:  Go to Security 

Step 3: then go User

Step 4: then Define menu.

Step 5: Query to user name.

Step 6: Set to person name.

How to find how many and what DFF (Descriptive Flex Field) are enabled in the Oracle APPS R12

SELECT APPLICATION_TABLE_NAME,TITLE ,FORM_CONTEXT_PROMPT
FROM FND_DESCRIPTIVE_FLEXS_VL
WHERE FREEZE_FLEX_DEFINITION_FLAG='Y'
AND LAST_UPDATED_BY NOT IN (-1,1,2,0,120,121);