# Single-sided placement ### Overview When exploring placement solutions, Quilter will automatically flip components between the top and bottom layers unless they are specifically associated with a placement region on that layer. For every layout job, **Quilter automatically tries to create some single-sided layout candidates** if it finds a valid placement solution that uses only one side. ### How to specify #### As a preference Quilter allows for preferential filtering by single-sided placement. To do this, go to the design parameters page and check the "Show single-sided layouts only" option. This will apply a filter during candidate review that you can remove if we don't generate any single-sided candidates. #### As a requirement Quilter will automatically try single-sided candidates first and only switch to double-sided placements if it can't find a valid solution. \ To make Quilter only explore single-sided placements, create [placement-regions](https://docs.quilter.ai/design-parameters/placement-regions "mention") that include all components and link them to the top layer of your PCB. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.quilter.ai/design-parameters/single-sided-placement.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.