I understand what you mean.
You can find documentation in Rawpedia (in french)
But basically you have to unlearn, work with mask and “lasso”.
If you know Capture NXD, or DxO, local controls are close (with less possibilities) in principle to those I put in place in RT.
if you want to have something that looks (a bit) like what you know - I do not recommend it at all with RT-spots - you have to set the scope values to 100.