Quicken 2007 And El Capitan?

I apologize for the lengthy preamble, but I have a MacBook Air with OS X 10.8.5 on the internal hard drive and I just installed a bootable OS X 10.11.6 on an external hard drive. In addition, I keep an older iMac G4 running OS X 10.4.11 primarily to run Quicken 2007 (“Q07”). However, I recently learned of a special Q07 version (called Lion) which will run on Intel Macs. On the Quicken website they just announced a final update (v.16.2.4) for this special edition of Q07, which will run on OS X 10.11 (El Capitan). So, my question is this: How do I convert from my G4/Tiger version of Q07 (v.16.0) to the latest Q07 version (v.16.2.4). I believe I must first update Q07 to the version compatible with Intel OS X Lion and then update that to the latest Q07 version to run in El Capitan. But, where do I find these updates to Q07 and what are the steps, e.g., do I upgrade Q07 v.16.0 on my older G4 iMac or do I copy the application to my newer MacBook Air and update from there? I can’t seem to find that information anywhere on the Quicken website. Thank you in advance for any and all help.