problem booking same timeslot for 2 different users

Hi,

I have spoken to Tom, WPMU DEV Support staff in depth regarding the problem and he has kindly asked me to ask you to kindly speak to him regarding this so he can pass on log in details etc.

We have designed a website for people to book a multi use games area that has two tennis courts which can also be used for football and netball.

What I require is for a member who wishes to book, to be able to do the following:

Tennis Court 1 + Tennis Court 2 (these can be booked independently)
Both Tennis Courts (no other bookings are then available for that time)
Netball (no other bookings are then available for that time)
Football (no other bookings are then available for that time)

Currently if a member books tennis court 1 - A user is unable to book tennis court 2 for that time period.

There is no cost to book a slot. Only a one off joining fee to the club.

Please find screenshots of the settings, the set up is identical to Toms test site but for some reason its not working.

Many thanks