Unfortunately I do not know how to upload a video, my computer knowledge is limited. Also, as a casual flyer I don't know what everything is called. Sorry.
On the FBW A320 Dev I import the route into the aircraft via the fly-pad into the MCDU, I select the runway to be used. At some point in the flight the runway appears on the PFD screen.. Descending. at about 15000ft I select the approach mode on the performance page of the MCDU. Fifteen miles approximately I select 'LS' and the vertical and horizontal 'dots appear on the PFD screen. When the Glide slope and localiser indications appear I select 'approach' and eventually the aircraft intercepts the signal. This may not be how real pilots do it but it works for me. With Heathrow none of these indications appear. The correct frequency is displayed on the Rad Nav page of the MCDU.
Incidentally on take off from 09L/09R the runway centralising indicator (the green vertical bar on the PFD) does not appear either.
I hope this is of some help.