Is there a way to position it divided into auto-layout ratios (ex. positioned 1/3 of the device)

And choose EqualHeights

Set the EqualHeightsConstraints setting to 1:3 as shown below

You can add the subview you want to be located at 1/3 point and set the vertical margin of the subview you added above to zero.

Hello.

The article below shows how to position according to the relative proportions.