On my Myford, I have a 6 station indexer, I use it with a lever operated Tail stock.
I have it set up for making a specific item, but is limited to 6 operations. It was made in England ,but not by the Myford company.It is getting a bit worn now, and is not as accurate as it used to be. In saying that, I brought a cheap one from Enco,but it is not as accurate as my well used one. Yeah I can fix it, but rather repair the older better quality one. The taper pin and tapered hole have worn that repeats and retains the radial position of the turret.
I have made quite a few bushes for it, and have 3 small short chucks mounted to adapters for holding drills, and reamers. Center drills are in dedicated holders, so are endmills and Dbit or single point form tools and Taps,(But did make tap/die floating holder station) . They are really handy for making repeat parts, or when you want to make a run of something but not want to get it done by production shop.
Some like mine have the option to have the turret index on the full retract of the tailstock.
The down side, it is reliant on the rigidity and stability of the tailstock, the stroke of the tailstock. Works best with lever or rack and pinion tailstocks. I have not tried it with the hand wheel/regular tailstocks. Tooling really needs to be set so that all tools can be used within the stroke of the tailstock. Otherwise you are shifting the tailstock for those operations.
I am a fan of Tail stock indexers, some are not.
Neil