Can the Rinne-Sharingan like Kayuga or Hagoromo had be transplanted? Can the Rinne-Sharingan be transplanted  or can it not because it comes from the forehead? Even if it could be transplanted would it have to be transplanted in the head?
The Rinne Sharingan is a dōjutsu kekkei mōra (advanced branch of jutsu unique to Kaguya Ōtsutsuki and her direct bloodline). Rinne-sharingan can't be transplanted on Non-Otsutsuki members. But there are ways to wield it, the exact instructions are written in the Uchiha stone tablet:

You need to have Rinnegan in both eyes
You need to be a jinchuriki for ten-tails

Madara Uchiha, as the Ten-Tails' jinchūriki, was able to manifest this dōjutsu in his own forehead after regaining both of his Rinnegan. As a result of Black Zetsu's actions, Madara's body then served as a vessel to resurrect Kaguya.