Pre-sale feature enquiry

Could you advise if you support the following or have an upcoming plan to introduce these features.

1. Session/stream within an event. Allowing a user to pick one or many to attend.
2. Check-in for particular session/stream (rather than whole event)
3. Write our own code for checkins (I was unable to see a hook to check someone in

Many thanks

https://www.ads-software.com/plugins/tickera-event-ticketing-system/