| CPC H04L 51/046 (2013.01) [G06F 3/0482 (2013.01); H04L 51/52 (2022.05)] | 20 Claims |

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1. An operating method of a terminal on which an application for a messaging service is installed, the operating method comprising:
identifying a first type of a first chatroom of the application, wherein the first type of the first chatroom indicates that the first chatroom is an anonymous chatroom;
displaying an interfacing object for calling an assistant mode;
receiving a call, associated with the first chatroom, for the assistant mode through the interfacing object;
displaying a first assistant interface corresponding to the called assistant mode and corresponding to the first chatroom, wherein the first assistant interface provides, based on the first type of the first chatroom, access to one or more first assistant functions and prevents access to one or more second assistant functions;
identifying a second type of a second chatroom of the application, wherein the second type is different from the first type;
receiving a call, associated with the second chatroom, for the assistant mode through the interfacing object; and
displaying a second assistant interface corresponding to the called assistant mode and corresponding to the second chatroom, wherein the second assistant interface provides, based on the second type of the second chatroom, access to the one or more second assistant functions.
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