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