Thank you… I could activate quite a few items now, and realise where the problems came in, for instance, Whether activated or not, an image MUST be in the Video section, otherwise the stafF block is covered by the Testimonial section (it is actually two bugs, because even if disabled, the video image will also still show and attempt to launch a video clip)
There are quite a few bugs like this (for instance: front page gallery stretches images instead of crop and scale)…