How will I do customize my manageiq UI once it is installed

how will I do customize my manageiq UI once it is installed.

There are many ways, what are you hoping to use ManageIQ for?

we want to customize manageIq UI for our internal requirements and needs, which we have installed openstack image, that istalled manageiq and its dependencies gems like manageiq-ui-classic.

Now we have manageiq code inside /opt/manageiq/manageiq folder. but we dont have its dependecies gems code here ex. manageiq-ui-classic,

now i want to change some UI for that we need manageiq-ui-classic code on my server which dont have internet access.

so what are the step which i should follow and after making changes, what are the services which i need to restart for reflecting the changes.