There are no requirements for this feature
No additional installation is required. KoolSuite installs the login page as a theme template.
From the SuiteCRM administration panel under Custom Login Page you can directly edit and modify the customizable part of the login form.
The code is saved in the themes / kooltheme / loginpage folder
Do you prefer the classic SuiteCRM page with the form in the center? Not a problem In the KoolSuite documentation you will find how to disable or modify the Custom Login Page