Hi Mikel,
Thank you for the clarification as our Mini HD Original has the old 3606 processor and GUI and therefore operates a bit different.
To answer your questions by number:
1. Number of display columns is easy to change for your preference.
MENU > SYSTEM > MISCELLANEOUS SETTINGS.
Top line, "channel list num" choose from 1, 2 or 3. Also note at the bottom "position" you can choose your info bar to appear at the top or bottom of your screen.
2. When you are on a satellite install screen, press yellow key on remote. Only options are to delete all TP (blue key) or do one at a time. With our ALi based boxes and superior blindscan I'd recommend just deleting all TP for a bird if you want to clear them for some reason.
3. Add/delete is not currently supported in most ALi based Amiko models. You can do this with our ALi editor. In the future I will get this option added to Mini HD SE.