Consistent indentation in TOC

I have been trying to add consistent indentation to my headings in TOC as seen below. H1 headings are a topic and H2 heading are the subtopics. The image below is a Microsoft Word document.

The same I need to mimic in Adobe FrameMaker but it just isn't happening. Here's what I end up with:

I have tried adding tabs and editing the reference page, but the H2 heading ends up at the right side or either looks horrendous. Can someone help me with this?