On this option panel you can select the blogs you want to use, and if you want blogs titles as results in the results list.
If no blogs are selected, then the currently active blog will be used.
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Multisite Options Panel
Choosing which blogs to search
Under the Blogs option, there is a drag-and-drop module, which allows choosing the multisite blogs, you want to search across. By default, the currently active blog will be used.
Choosing blogs to search within
The plugin by default return posts and pages, so don't forget to choose the desired custom post types under the General Options -> Sources panel.
Returning Multisite blogs as results
On the same panel, enabling the 'Search in blog titles?' option, will allow the plugin to return blogs as results.
Searching Blogs as results
Multisite search limitations
There are a few limitations with the search engine when using a multisite installation.
Do not use category/term exclusions
Do not use category/term selectors on the frontend
Categories and terms with equivalent names across the multisite network have different ID's. Therefore it's not possible to properly display and exclude them.
Custom Post Types across the network must exist in order to be returned. For example: Displaying WooCommerce products from Blog 1 on Blog 2, Blog 2 must also have WooCommerce installed (network installed).
Do not use custom field filters on the frontend, unelss you know that the custom field exists on each site
Some custom fields might exist on one site, but not on the other. Use custom field filters only if the affected custom field exists on each site.