Below are few ways to find Menu Navigation
1. SQL to find Menu navigation.
SELECT A.PORTAL_LABEL || ' --> ' || B.PORTAL_LABEL || ' --> ' || C.PORTAL_LABEL || ' --> ' || D.PORTAL_LABEL Navigation FROM PSPRSMDEFN D, PSPRSMDEFN C, PSPRSMDEFN B
, PSPRSMDEFN A WHERE D.PORTAL_PRNTOBJNAME = C.PORTAL_OBJNAME AND C.PORTAL_PRNTOBJNAME = B.PORTAL_OBJNAME AND B.PORTAL_PRNTOBJNAME = A.PORTAL_OBJNAME AND D.PORTAL_NAME = C.PORTAL_NAME AND C.PORTAL_NAME = B.PORTAL_NAME AND B.PORTAL_NAME = A.PORTAL_NAME
AND D.PORTAL_URI_SEG2 = <provide Component name>;
2. Use enterprise component to find object navigation as below. Navigate Menu --> Enterprise Components --> Find Object Navigation..
Also you can refer below doc .