Havdallah on tisha b'av

What should be done for someone who is not fasting and cannot make havdallah for himself?

Why can’t he make havadallah for himself?

Doesn’t know how. He might be able to do it in English, but he certainly prefers that I do it for him.

So you make havadallah for him and have him drink it. You should not drink anything.

No besamim. But yes to fire as usual.

Beer or wine is preferable? Should I have intention that this my havdallah too (or should I do it again on Sunday night)?

Grape juice

If you had in mind it’s fine. If you didn’t say again Sunday night.