The "Client Logos" is core part of our avvin theme. You can setup it very easily. Here are steps.

• To setup Client Logos, first you need to add some entries with photos and texts. Go to "Client Logos" section and click "Add New". Fill details as described in below screenshot:
  
• Create some more entries as described above.
• Now we need to create a new page to show Client Logos. The option is included in "Visual Composer" plugin (Make sure you installed Visual Composer plugin). Go to Pages >> Add New and click on "Add element" button:
  
• Now click on ThemetechMount Client Logo Box option.
  
• Now you will see options for the Client Logo box. Fill all options as you need and click on "Save" button to add :
  
• The Client Logo box is inserted. The box will look like this:
  
• That's it.