The "Client Logos" is core part of our GoMetro 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 "King Composer" plugin (Make sure you installed King Composer plugin). Go to Pages >> Add New and click on "Add element" button:
Now click on ThemeMount Client's 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: