In Minerva, sending bulk SMS is done under the "SMS Message Sending" menu.
After pressing the "New" button and typing a "Name", you can select the appropriate types for the fields listed below.
Template: In the "Template" box that opens, the Message Template created for "Business Object" -> "CMU - Sending Message" and "Business Object Type" -> "SMS - SMS Message" or "All" are displayed. You can select one of them.