Personally I have only used it for buying some ETFs like the NZX top 50 , and drip feeding money in weekly into that, and just accumulating them, and plan to be in them long term. Haven't looked into individual shares.
I'm part of smart shares regular saving option.
Pay set amounts once per month and that used to buy units in 5 ETFs.
All dividend are paid in more units rather than money so bit like compounding interest except share units.