すみません、これとこれ、別々に温めてもらえますか？ — Excuse me, can you heat these two separately? (Convenience · Store, Formal — to staff, JLPT N4)

Gesture & etiquette

Present the two items, indicating each with a slight pause or subtle gesture.

Be clear about which item needs to be heated first or if they require different heating times/temperatures (though staff usually know standard times). Do not try to operate the microwave yourself.