This is a handy infographic called The Ultimate Wedding Roles Visual Guide, which provides information about the responsibilities of the different people involved in a wedding.
The infographic teaches us about who does what at a wedding including the bride and groom, the best man, the maid of honor, the father of the bride/groom, the mother of the bride/groom, the ushers and the bridesmaids.
This guide was created by a UK wedding speech website called Great Speech Writing and has been designed to help people who are getting married to get things organized. If you know someone who is engaged, then why not tell them about this trend? Even if you aren't getting married, there's interesting insights in this chart.