Always use this template inside the Etymology section as multiple etymologies can exist for the same entry. For example, खिलाना(khilānā) has 3 etymologies, each with a different verb set.
Even if there is a single Etymology section, place this template inside it, for consistency, and to account for future additions to the entry.
Placing this template as the first line inside Etymology section is the convention currently being followed.
If there is no Etymology section, place this as the first line below the L2 heading ==Hindi==