How to setting system level?

How to setting system level ?

like : How to upload logo, favicon, meta tags etc?
How to register new user from my portal ?

I want to user can register directly and add their users and companies . I mean user should be Super Admin (system user), admin (company owner or company), user (associated with company)

Please help me how to configure above functions.

domain : http://www.ezyinvoices.com/

Invoiceplane does not work like that. It is meant for a single company.

You can build a platform to install separate installations / databases for each client outside of the Invoiceplane platform.

How to setting system level ?

like : How to upload logo, favicon, meta tags etc?
How to register new user from my portal ?