Kitbashing
Open Standin Outliner Window / Standin Outliner.
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Select Static meshes you want to make a kit from.
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Select Create in the Standin Outliner.
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Pick Near Pipeline.
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Build Standin
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Save to package by right clicking the standin.
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Choose a path and press save.
The new kit bashed asset is now ready to be placed in the level.
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Optional - Bake materials
Select the Standin and expand the Near settings.
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Add material property casters
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Adjust Output Texture Resolution.
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Rebuild the standin.