Fire Stick with Kodi.

Can any one advise.

I currently have one fire stick connected to our bed room TV.

How ever, the person that rents the spare room has asked the following:

Can more than 1 fire stick be connected to the wifi IP address?

Can he use it plugged directly in to his iPad using a HDMI adaptor. If not, can he insert it in to his TV, then link the iPad to it that way? Then what app needs so be down loaded to allow his iPad to connect to the fire stick.

And advice greatly appreciated, then I can show him replies when he arrives from back offshore.

Thank you in advance.