Some of my teaching is very similar to that with singers, however the need for vocal expansion is less needed.
We still focus on setting the right foundation based on your vocal needs.
I will focus on tone, clarity, projection, articulation, intonation/reflections, proper vocal hygiene and warm-ups before and after any long presentations etc.
I also include vocal rehab where needed. For example, after a cold, after losing one's voice after vocal rest, during/after touring etc.