As mentioned here
Version - Bahmni 0.92
To be scheduled: This queue shows a list of patients that have a surgeon pre-op assessment form or a surgeon follow up form filled with “Patient consent” as “yes” and who do not have an surgery scheduled post filling the form. The queue also shows a list of postponed surgeries.
We are not able to see second tab “To be scheduled” also please explain what are "Pre Op assessment / Surgeon follow up form, there are no such Obs forms available on default setup