A conservatorship is a legal concept whereby a probate court appoints a person to manage an incapacitated person or minor's financial and personal affairs. It is often a relative. The terminology and details vary state-by-state, but the general principals are all similar. The conservator's duties include overseeing finances, medical care and living arrangements. In Britney's case, the conservators also oversee visitation arrangements with her two teenage sons, who are under the full custody of her ex-husband, Kevin Federline. It is most frequently used for someone who is severely mentally incapacitated, or suffering from dementia. Yet in the 13 years of Britney's conservatorship, she has released four albums - two of them going platinum; appeared as a judge on both The X Factor and American Idol; and had a four-year residency in Las Vegas that reportedly grossed close to $138 million. The specific details of Britney's case have not been revealed. Unless a judge says otherwise, they still retain rights to make certain decisions, according to the California handbook. They can control salaries they earn, spend an allowance, retain legal representation, vote in elections, get married, draft their own wills, make medical decisions for themselves and ask a judge to terminate conservatorships or replace their guardians. 'All conservatees have the right to be treated with understanding and respect and to have their wishes considered. They have all basic human rights, as well, and the right to be well cared for by you,' the California handbook says. Britney says that she has not had these rights. It is unclear whether this is a violation of her case, or as agreed. There are two types of conservators: a conservator of the person, who looks after meals, housekeeping, transport, housing and recreation, and a conservator of the estate who manages finances and protects assets. Sometimes one person can play both roles. The conservator of the estate must file periodic activities reports by the first year after their appointment and every two years following, until the relationship is terminated. The estate managers have to disclose asset values, gains and losses, and show receipts for all expenditures of conservatorship funds. They are also prohibited from borrowing money from the conservatee or lending out their cash. Many countries have similar systems. In the U.K. it is called a deputyship. In Britain, however, the court will appoint an independent conservator, rather than a family member. All rights reserved for this news site (dailymail) and under his responsibility