The Skype for Business default options are appropriate for small and casual meetings with co-workers. Change participant settings for Skype for Business meetings Here’s a guide taken from the Microsoft Office Support site detailing how to change the participant settings. You may want to give certain people permission to present or to may want to disable IM to limit interruptions for example. If you’re hosting a Skype for Business meeting you should be aware of how to change the participant settings according to who you would like to participate and how you would like them to participate.