A display apparatus comprising: a display; a communication circuit configured to communicate with a first external device (910, 1010) and a second external device (920, 1020); a storage configured to store a list of a first content group designated to allow sharing of content from the first external device (910, 1010) to the display by a first user of the first external device (910, 1010), a second content group designed to block sharing of the content from the first external device (910, 1010) to the display by the first user, a third content group designated to allow sharing of content from the second external device (920, 1020) to the display by a second user of the second external device (920, 1020), and a fourth content group designated to block sharing of the content from the second external device (920, 1020) to the display by the second user; and a processor configured to: display a content list comprising the first content group and the second content group on the display, based on detection of the first external device (910, 1010) and no detection of the second external device (920, 1020) through the communication circuit, display a content list comprising the third content group and the fourth content group on the display, based on no detection of the first external device (910, 1010) and detection of the second external device (920, 1020) through the communication circuit, and display a content list comprising the first content group and the third content group on the display and prevent a content list comprising the second content group and the fourth content group from being displayed on the display, based on detection of both the first external device (910, 1010) and the second external device (920, 1020) through the communication circuit. a display; a communication circuit configured to communicate with a first external device (910, 1010) and a second external device (920, 1020); a storage configured to store a list of a first content group designated to allow sharing of content from the first external device (910, 1010) to the display by a first user of the first external device (910, 1010), a second content group designed to block sharing of the content from the first external device (910, 1010) to the display by the first user, a third content group designated to allow sharing of content from the second external device (920, 1020) to the display by a second user of the second external device (920, 1020), and a fourth content group designated to block sharing of the content from the second external device (920, 1020) to the display by the second user; and a processor configured to: display a content list comprising the first content group and the second content group on the display, based on detection of the first external device (910, 1010) and no detection of the second external device (920, 1020) through the communication circuit, display a content list comprising the third content group and the fourth content group on the display, based on no detection of the first external device (910, 1010) and detection of the second external device (920, 1020) through the communication circuit, and display a content list comprising the first content group and the third content group on the display and prevent a content list comprising the second content group and the fourth content group from being displayed on the display, based on detection of both the first external device (910, 1010) and the second external device (920, 1020) through the communication circuit. display a content list comprising the first content group and the second content group on the display, based on detection of the first external device (910, 1010) and no detection of the second external device (920, 1020) through the communication circuit, display a content list comprising the third content group and the fourth content group on the display, based on no detection of the first external device (910, 1010) and detection of the second external device (920, 1020) through the communication circuit, and display a content list comprising the first content group and the third content group on the display and prevent a content list comprising the second content group and the fourth content group from being displayed on the display, based on detection of both the first external device (910, 1010) and the second external device (920, 1020) through the communication circuit.