Appointments and multiple services

There is a problem with showing availability between different services.

I have three services.

• Treatment
• Web coaching
• Teaching
When I press the "show availability" button for these different services, they do not show the same schedule. Hours that are busy, show up as green, etc.

The same goes for double sessions. I tried to include double session (120 instead of 60 minutes), but they did not show proper availability, and allowed clients to book into hours that were already taken.

So; there's an issue with both scheduling different services that have the same length, and scheduling double sessions of the same service. It seems that they are not reading the calendar properly.