Hi, I don't think so. I think the only report for that would be a chronology type one where you could choose to include all spouses, all children, parents/grandparents and what events/notes with each of them, etc. Because family group report is exactly that. That family's group. One group at a time. The main person had two marriages, one family at a time (hopefully). One group at a time. Thus, the report does the same.
You could use the book descendant narrative for the main person, and just use 1 or 2 generations or the actual chronology report. You will only get though, 'their' extra spouses and children through those spouses with the narrative or the chronology report. Not the extra spouse's extra spouse/children, etc.... no step-children in other words.
These are the only family reports that will have that 'check' for to include extra/all spouses. So, your main person, if they have children through two wives (or the woman children through two husbands), the main person, it will show all spouses for them and all 'their' children together. Step-children will not be included. (yeah, repeating myself)
If you go to the chronology tab? At the bottom, in the box of "list or report style"... click report style. Then click the options button beside it and click 'display options'. Under that you can choose who all & what all to include. Loads of options there, the extra spouses, children, parents, grandchildren, their events, notes, etc.... include some it them or none of them.... play around and pick out who all and what you want.
When you close it, the chronology tab will show you what all you chose. Glance up and down, see if you want any changes made. Go back into options if you do and just tweak until you've got what you want. You can print in colors or just black and white even. With or with out the timeline sidebar, etc...
When you have your 'tab' showing a good family report like you like it, then click the options button again and click "report". You will get the print preview screen to see what a printed report would look like. If you like it, save it or print it from there. If not, close and tweak some more. It's a great way to really get the idea of what and who was in that person's life. You can include world events too, as many or as little as you want to set a better 'stage' or 'scene' for their life. Pretty cool.
You will still have to do the same for any spouses where you want 'their' extra families, but at least it can be done this way.
Hope this helps. A little confusing to describe. Much easier to just show someone. But feel free to ask questions. We'll do our best to help or answer them or find someone that can.
Oh, and just in case you don't already know about them, here is a great place to get help. They have webinars and examples and loads of help there. It is what they are there for. I think she said they now have over 900 members... it's popular.
Legacy Virtual Users Group
https://plus.google.com/communities/102471840504878929586Val