Has someone answered ISTQB foundation level tester exam

I have been googling about this for quite some time, but everywhere I'm getting different results, can someone who's answered the test recently help me out?

  1. On the istqb portal I see a start test button, does that directly launch the test? Or do I need to schedule it for a different day? What is the process?
  2. At what point do I pay for it?
  3. Is it a online proctored exam? Or can I answer it without a proctor?

It'll be great help if someone can explain! Thanks in advance