VBA to sort a worksheet by last name

Greetings, I am trying to find a way to instantly short my worksheet. I have a worksheet with data that spans from column A to column T and it continues down to row 525. After the header, the data begins in row 3. The next 325 rows currently have data. I begin entering new names with data at the bottom of the list on a regular basis. When I am done entering the new names, I hope to be able to instantly integrate them into the list alphabetically. Column C is the last name of the person. Is there a way to create a VBA button to do this? Thanks in advance for any help that can be provided.