Dalek Controller

The title of Controller was used by Daleks to designate individuals who were in charge of a major Dalek operation. Unlike the Controllers of the Cybermen, it was not the supreme rank on its own, but one Dalek could both hold the Dalek Supreme and Supreme Controller positions at once.

Supreme Controllers
When the Black Dalek Leader commanded the 22nd century Dalek invasion, (PROSE: The History of the Daleks) it held the title of Supreme Controller and managed the Bedfordshire operation. (TV: The Dalek Invasion of Earth) It also held the rank of Dalek Supreme. (PROSE: Doctor Who and the Dalek Invasion of Earth)

A red Dalek was Supreme Controller of the sector of space containing the planet Celatron. The Dalek Supreme was its direct superior. (AUDIO: "Death to the Daleks!")

After the Time War
In 1930, when the Cult of Skaro created an army of human-Daleks in New York City on Earth, Dalek Caan was designated Controller (which was originally to be Dalek Sec's position), becoming linked connected to a military computer which allowed him taking control of the new army. When the human-Daleks turned against the Cult of Skaro, Caan used his connection to kill them before abandoning his post. (TV: Evolution of the Daleks)

Human Controllers
Controller was a hereditary title for human collaborators who managed a part of the world for the Daleks in an alternate timeline. (TV: Day of the Daleks)

Judith Winters was a young girl that the Renegade Daleks hooked up to a battle computer and who operated their Time Controller. (TV: Remembrance of the Daleks)

The Controller of the Game Station in 200,100, though not a Dalek herself, was under their control, making sure any contestants that lost were transported to the Daleks to become Daleks. (TV: Bad Wolf)