I've grown mine in all sorts of light, all over the house and in the greenhouse. It's done fine pretty much whatever I've done to it. It's my only oncidium to not have had problems at some point due to my inability to grow this sort. (Apart from an initial problem of something eating it, not my fault and I got rid of it
)
Anyway, search for care on Colmanara Wildcat without the hyphen. The Oncidium Miltonia Odontoglossum bit you have in the name is just saying that it's a mixture of those genera, commonly used name for it is just Colmanara Wildcat, although the RHS has now reclassified it as Oncostele Wildcat... cause they like to keep changing things. Most stuff about it online will still use Colmanara though.