A saved enquiry needs someone responsible and a clear next step. Open Emma's lead and check Assigned agent. Maya is handling this enquiry, so keep her assignment. Now open Tasks on the lead and add a task. Write 'Confirm Emma's viewing', set it for today at four, and check the task's assignee. Because you started from Emma's lead, the task is linked to her enquiry. Save, then check it in the lead's task list. Maya can now see what needs to happen and when. Update the task when the confirmation has actually been done.