I've always known that I'm terrible at using websites (I never know where to click). But I guess I've recently realized that this applies to apps as well.

Today's case: Paragon Hard Disk Manager.

My goal: Mount a backup as a drive letter.
After multiple rounds with support, I convinced them to indicate on a screenshot exactly where it is that I should click.

I get that I'm possibly being obtuse, but I have NEVER in my computing years been drawn to click on a thin DOTTED LINE part of an arrow with the expectation of it doing something.

And no, there was no mouse hover indication that the line had special meaning.

@wdormann similar experience when using itunes for the first and the last time: importing a disk is nowhere to be found in the menu. The only way to do that is drag&drop. Like, how am I supposed to figure that out?