Confused? What does this mean?

[L Marcelle]

Hi all. I was hoping someone can help explain what this means.

I received a letter in the post today from St thomas' asking me to attend a group education session to discuss bariatric surgery.
This is my first appointment.

What does this mean?
What happens after this appointment?
Does this mean funding has been approved?
Is this tier 3 or tier 4?

Any help would be appreciated. Thank you