Create series of Events
Basically you need recurring meetings like in outlook.

I think you will have to create a rule based on flags. The flag could be something like daily, weekly, bi-weekly, monthly or yearly. Once an organiser selects the flag, rule should create nodes with meeting start time in future according to which flag was set.

Also give user an option to select # of events or end duration and you can put this check in your Rule as well to limit the events it creates.