Meeting Options are limited

Hello, 

I have run into a problem of not having a full access to meeting options. I would like to schedule meetings for other people in the office where I do not necessarily have to attend. I would also like to assign other people as co-hosts so that they are able to admit people and have more control of the meeting. There should be settings of being able to let people come in without waiting in the waiting room as well, but I cannot seem to find it anywhere. 

Here is the attached screenshot:

These are the only two options I get when clicking "Meeting Options".

Additionally, whenever I set up a meeting, some people are not able to respond to it because they get an error of undeliverable response: "delivery has failed to these recipients or groups". 

What is the issue here? Does it have to do with how Outlook is set up? How can I change these limitations and errors? 


Thank you so much!