Hey there! Hello!
In an instance of Microsoft Word 2016, you'll find that Merge Cells in the right-click option menu will do just what you're looking to. In Attachment 1, you'll find where the actual selection is, and in Attachment 2, you'll see what it did to the cells across the top, which were previously connected. I also added a different formatting to the table in the second attachment, the colors were not changed do to selecting Merge Cells.
Hope this helps you out! Feel free to ask me any additional questions if you have any. :-)
The home keys for the numeric keypad are 4 5 6
The fingers (Index, middle, and ring), on your right hand should always start on the 4 5 6 keys respectively. These keys are the home row keys for your numeric keypad. Each finger placed is responsible for a column of keys. For example, the middle finger is responsible for all the keys that lie in that column.