Ok..
1 - I am self employed with skills I can use from home based on knowledge gained from decades of self study, external assessment/qualification when I was more mobile and generally a bit healthier. I used to go out to peoples homes, now I can no longer do that. I also used to run seminars/lectures, but I can't do that any more either.
I am subcontracted to one company for several shifts a week, and freelance at other things, but all within the one field.
2 - Now - the fact my colleagues will cover my shifts at no notice, obviously thats extra pay for them if we can't arrange a swap. Often I can't arrange to swap because I don't know if I will be ok to do their shift instead of mine.
Then - I had a PA via access to work to carry stuff and drive me around, set things up, demonstrate things.
3 - I was already disabled when the company I sub contract to headhunted me for their start up project. I've been there ever since and have had several pay rises. They're happy to work around my disabilities and I also get extra work through them sometimes (writing articles, occasionally illustration).
4 - I'd put myself through decades of self study on the thing I do, plus external assessments, memberships of professional organisation. Some were more helpful than others as my disabilities increased/mobility decreased. When I was more mobile I did some volunteer work for practical 'real world' skills.
5 - N/A.
6 - N/A - I have huge gaps of years where I literally lay in bed trying not to die. I doubt any employer would interview me! I wouldn't!
7 - Big Company headhunted me, I was already known for what I do, and the job was mine literally before it even existed. This is incredibly lucky. Private clients find me via my website or word of mouth.
I am extremely lucky that a thing I was doing for free and later privately for a reasonable fee became something someone else wanted me to do for a decent hourly rate. I am again, extremely lucky that I have a variety of skills/talents, some of which I've worked hard at and some of which I honestly have not, that people are willing to pay me for, although I am now taking a real hit from AI!
I do not know how I would go about finding employment in any other industry, I can't work outside of the house (I currently cannot get out of my house safely!). Even long before I knew I was disabled (so loads of symptoms I struggled with but no dx), I rarely ever got to interview stage, and have never been offered a job following interview for one reason or another (I might once have got a job at Sainsburys but I had to leave the area). I couldn't even get McDonalds to hire me as a teenager!
So I am stuck, self employed and freelancing which is very precarious - I am also incredibly lucky that I inherited enough to buy a house (right to buy, and then bought a house at below market rate from my sister who was supported by our Father in buying another property) so I have some security there.
I am also debt free and have some small savings plus two credit cards for emergencies (literally nothing on them, we occasionally use them for the big shop then pay off immediately we get home).
I get max. PIP which pays for my vehicle, (yes, ironic since i can't currently use it but its a WAV and they're on a 5 year contract), physio who comes here, various stuff the NHS either doesn't supply or supplies only in very limited amounts, eg replacement parts for equipment, B12 jabs.
I get UC though I am not fit to work and not expected to find any/do any, I am permitted to do what I want, I just report my incomings/outgoings each month. I'd have preferred the WTC system but was pushed off that into UC fairly recently, so thats a safety net if I can't do any work or have to give my shifts away at any time.
My partner is my full time carer, I can cope with him being out of the house for a few hours at a time but theres a lot I still can't do, or am not safe to attempt doing if no ones here.
Didn't mean to quote the OP can't remove it now though!