This configuration only impacts Guests and not Admins.
Flatfile allows you to update your sidebar to hide/show certain elements via the Space endpoint. Sidebar Configuration Simply update metadata.sidebarConfig when calling spaces.update().

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Building a guest sidebar

Learn how to create a sidebar configuration, and update a sidebar configuration from an event listener. 
import api from "@flatfile/api";

export default function flatfileEventListener(listener) {
  listener.on("file:created", async ({ context: { spaceId } }) => {
    try {
      const updateSpace = await api.spaces.update(spaceId, {
        metadata: {
          sidebarConfig: {
            showSidebar: false,
          },
        },
      });
      console.log(updateSpace.data.metadata?.sidebarConfig);
      // Additional code related to the space update process
    } catch (error) {
      console.error("Error:", error.stack);
      // Handle the error appropriately
    }
  });
}
See full code example in our flatfile-docs-kitchen-sink Github repo

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Guest sidebar reference

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metadata.sidebarConfig

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showDataChecklist

Type: boolean The data checklist shows all of the data needed for uploading to the primary Workbook.

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showSidebar

Type: boolean Determines if a guest can see the sidebar. If the sidebar is hidden and there are multiple Workbooks in your Space, please specify the desired Workbook ID as your defaultPage.

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Example Project

Find the guest sidebar example in the Flatfile GitHub repository.