Seems like the OP is aware of how Turret presses work and is aware of multiple modes in which they can be used, but rather is asking how INDIVIDUALS CHOOSE TO USE their turret presses.
Personally, when I'm using a Lee Classic Turret, I leave the case stationary and I let the autoindex feature pass through all of the functions I have installed - so for my competition ammo, that means I size and mandrel expand in two strokes then index two strokes while I remove the sized case and replace a fresh case to be sized. On my Redding T7, I do the same, but I turn the turret forward and backward between the individual steps.
I use this method because I typically design my loading processes around time-efficiency and improved economy of movement, as well as eliminating wasted activity and actions in the process. In general, inserting and removing cases from the press is one of the greatest contributors to overall process time, and eliminating as many remove/insert steps as possible will eliminate a lot of wasted time. Equally, remove/insert is NOT a value added step in the cycle. When the ram is moving, we're doing something to the brass, whether that's priming, sizing, expanding, or seating - but when the ram is WAITING for our hands to remove and insert cases, we're wasting time on a specific cycle step which does not add value to the product, hence does not add value to the process.
I know a lot of shooters which use their progressive presses for partial processes - which eliminates the hand moving to insert and remove cases altogether, and allows sizing and expanding to happen in an automated flow, no hand moving, and the ram is always moving - of course, this has a relatively low capital efficiency, as the total gear cost is much greater for a case collator, feeder, and progressive press than for a simple turret press. But the capital investment dramatically improves time efficiency, reduces operator error potential, and reduces labor burden in the process. All good things, for those of us loading big batches of rifle ammo. Of course, we'd love to be able to load the entire process in one uninterrupted cycle, but most rifle shooters want to clean brass, maybe anneal, and definitely trim between decapping and seating, so we can't use the progressive press for full process, as it is designed. But the tool still works.
Honestly, I'm really tempted to test sizing rifle brass on my Lee APP. I'd have to run the brass through the press twice - once to size and once to expand, but I'd love to eliminate handling the brass into the press from my process entirely. Lee APP to decap, clean, dry, annealer with robotic feeder, Lee APP to size, Lee App to expand, Giraud with robotic feeder, Lee ACP to cap, charge with the Auto-Trickler, seat in Arbor press... I'd never actually have to put a case into a shellholder, and wouldn't ever be using a conventional press...
I HAVE occasionally needed to do ONE step on my press, and rather than getting out my Co-Ax or my O-press, I've simply disabled auto indexing on my LCT, or left the turret alone on the T7. For example, when I'm drawing bullets, or bulge busting pistol brass, or small base body sizing cases when changing barrels. But most of the time, I try to crank as many operations as I can without removing the case from the press.