You might look into drama coaches that give elocution lessons. I imagine that the skills are fairly similar. I used to do a bit of drama and choir and I found

You might look into drama coaches that give elocution lessons. I imagine that the skills are fairly similar. I used to do a bit of drama and choir and I found the warmup exercises to be helpful for enunciation and such. A brief warmup before a meeting might be a good idea too. The major downside is that it looks and sounds ridiculous, but it will limber up the muscles in your mouth and face.