This is the downside with using registrations extensively, multiple per song. You need to spend a lot of time setting it up, and then use marked up music to remember what to press when. That’s why it’s not for everybody, especially the more experienced players who can play whole gigs without any music or cheat sheets, deciding what to play or changing things “on the fly”.
There is a middle ground, use multiple registrations for only a few of the more complex arrangements, where you can just memorize what to change, and when. But for run of the mill songs, set up a single registration for a song which sets style, tempo, main voice. Then just use style variation changes, maybe linked to OTS voices to change a bit when you feel like it. Keeps you in control. Another modification on this is to have a bank of registrations with a few favorite voices for easy selection.
One of my observations listening to recordings on the forum, is that players rely far too much on changing voices, style sections etc etc to make the performance interesting. But they play each repeat identically and verbatim. They are overusing all the technology just because it’s available. Good players don’t do this, they personalize each section with interpretation, improv, phrasing, so it stays interesting. Learn to do this and you may not need 10 registrations per song!
Mike