预先约定时间访问to schedule a visit

• 安徽省建立省长约访群众制度。

  Anhui Province has established a system whereby the provincial chief schedules visits to the masses.

• 约访有关领导人未能被排上日程，据说是有重要的接待任务。

  When scheduling visits with the relevant leaders, one was not able to make it into the diary. One hears this is because they have important entertaining tasks.