Howdy fitness360,
In some ways recurring events will simply show up as numerous single events. This makes sense though. For instance on the Month view, you certainly want each instance of the event to show up on the calendar. Even though they show up as numerous single instances on the front-end they are still packaged together. If you need to make changes to the description for instance, you can do so and it will apply to all events in the series. Furthermore even on the front end they are packaged together to an extent. A user is able to view all events in the series by clicking the “See all” link up top.
In order to create this sort of recurring event you can just create a new event, set “Recurrence” to Custom, “Frequency” to Weekly, and then set all three days. As you mentioned you will need two recurring events, one for each timeslot.
If you have some idea on how to improve this behavior, please throw is up on our uservoice page: https://tribe.uservoice.com/forums/195723-feature-ideas This will allow others to voice their support for your suggestion. Does this address your issue? If not please let me know!
– Brook