If you are using Classiera 2.0 + Version then Watch this Video.

Go to WordPress Dashboard --> Classiera Options --> Layout Manager --> Layout utilities --> Here you will see option for font awesome or image icon.

After to select and save settings please go to All Posts --> Categories --> Edit any category and you will see option for .

1- Font Awesome icon : Leave empty if you want to use.

2- Category Image : Upload image here.

3- Select Color from color picker.

4- Map/Image : Upload your Icon here.

Update category, That's All

You can get Icons code from these links.

http://fontawesome.io/icons/

http://zavoloklom.github.io/material-design-iconic-font/icons.html

If you are using Old(Classic) Version then follow these steps.

1- Please login to Your WordPress Dashboard
2- Come to All Posts --> Categories --> From Here Edit any Category or Add New Category .

3- Here you will see "Icon Code" Input box, Put Icon code like "fa fa-car" and you can get this code from.

https://fortawesome.github.io/Font-Awesome/icons/

4-Then Come to "Icon Background Color" From here you need to select color for this icon.
5- Then come to "Map Pin" You need to select MAP Pin icon for this category , We have include some icons image in our dummy content folder .

At the Last Please click on "Add New Category" if you are adding new or you will see update button.

Thanks