STEP 1: Add the UET Tag for all pages by pasting the script inside the decision tree level.
See the short clip below on how to insert DT level scripts
STEP 2: Insert the conversion script inside the node level (Where you want the conversion to fire)
UPDATE: When adding the conversion Script, please make sure to add only the second and third line.
It should be something like this: (The image above is for setups where you need to call a function to fire the conversion and set it to a button or any clickable hyperlink)
<script>
window.uetq = window.uetq || [];
window.uetq.push('event', 'CONVERSION_NAME_HERE', {});
</script>See the short clip below how to insert node level scripts