Hi,
There are two ways to configure homepage -
1) There is a default Project which you can use(named as RunMyProcess - Homepage & web interface - Homepage). In order to customize you have to manually update the js and css of its web interface.
2) Creating a new project for homepage -
a) Create a Web Interface (Home Page) take a js widget with its identifier as script and paste the script mentioned in homepage.js(refer below link).
b) The new home Page only works in LIVE Mode. So create a LIVE version of the application.
c) In order to display an icon under a section, you need to tag the interface with the name of the section.(In Web Interface implementation tab there is a Tag option)
d) Copy your homepage URL and paste it in Configuration-->Custom Home page and Save it
Refer -
Hope this helps you.
Thanks,
Sweta