Some teachers in the national smart education platform for primary and secondary schools have no live broadcast options because they didn't click to start classes. According to the relevant information, after opening the enterprise WeChat, first click the workbench, then click the class live broadcast function on the workbench page to enter the class live broadcast page, then click the function I want to attend class, then set the grade segment to participate in the live broadcast class, click OK after setting the class to participate in the live broadcast class, enter the class theme after entering the live broadcast page, and then click the start class function to start the live broadcast class.