Disclaimer** not an expert, just want to be helpful =]
1. Just make sure to list all of those jobs and all of those residences, even if the timeline overlaps. I am currently working 2 jobs so in the first line I put my newest job 2017-06 to current then my older job I put 2014-07 to current, so those overlap. I had a month where I was in between jobs (actually just enjoying a month off for the stunning BC summer) so I wrote in 2014-06 to 2014-07 as unemployed and just put my home address at the time and myself as the contact. I ticked both the 'I was employed' and 'I was unemployed, a homemaker or retired' boxes. If you're filling your form out on the computer just keep hitting the + button until you've got everything in within your eligibility period. Adding an extra sheet wouldn't hurt if you needed, better to give more than less in my opinion.
2. I feel like the answer is yes, put her under homemaker from July 2016 to current and whatever her previous job was up until July 2016 and make sure she ticks both boxes at the top of the question.
3. That sounds right. So it should look like;
2016 Yes Yes
2015 Yes Yes
2014 Yes Yes
2013 No No
2012 No No
Thank you so much!! It does clarify a great deal