Few configuration questions

Hello everyone!
I use suiteCRM for really basic tasks. Actually, I use only ‘calls’ tab. I’ve managed to configure the most of it as I wish but still there are some issues:

  1. How to get rid of the notifications icon in the top bar (the ‘bubble’ icon)
  2. How to force Calls view to be sorted by start date from the newest (future) calls to the expired calls? The problem is that I had it so configured but then I suppose I was rummaring in the options and must’ve clicked something - now when I refresh the page it is sorted from the expired to the newest.
  3. How to disable reminders? Every time I create a new call or edit one I must cancel a reminder - really annoying.
  4. How to disable the right panel with Actions and Recently Viewed? You can hide it but it works till the next login.

Thank you very much in advance!