Showing on the wrong pages or devices
The short answer
Floating layouts have display rules: which pages to appear on, which to hide on, whether to show on desktop, mobile or both, and whether to appear instantly, after a delay or on scroll.
Inline layouts have no display rules — they appear wherever the code is placed.
Where the settings are
Layout tab, with a floating display mode selected. Three groups: When to Display (instantly, after delay, on scroll), Display on Pages (show on, hide on), and Display on Devices (all, desktop only, mobile only).
Using them well
A floating badge on every page uses view allowance on every page. Limiting it to the pages where it helps — product, pricing, contact — cuts usage and reduces the clutter.
On scroll is the most useful trigger for a review badge. Someone who has scrolled has engaged; someone who has not is still deciding whether to stay.
For inline layouts
Control placement by where you put the code. A widget in a page-specific block appears only on that page; one in a site-wide footer appears everywhere.