Hi, a very warm welcome to the site, the unit is quite large so if you get stuck on a specific criteria please pop back to post about it xx.
The links below may help research the unit as a whole
203 Unit information from OCR
This older Level 2 STL handbook includes information for the unit - search inside the
amazon preview for the words 'communication and professional relationships' and click to page 35.
Please know that the legislation included in that book is out of date.
There is a newer version of the book (picture & link below) but it doesn't detail TDA 2.3 specifically
level 2 STL handbook
Mentoring and Befriending Foundation
Best wishes, let us know how its going xx