Struck-through slots cannot be booked — they are already taken on this date.
You are booking without an account, which is fine — the advocate needs to know who is coming and how to reach you. Afterwards you can set a password and this consultation moves into your own portal, with the case file, hearing dates and messages that follow it.
Already have an account? Sign in and the booking is saved straight to it.
The advocate confirms the slot. You pay them directly.