Open Adobe Lightroom, and then click Develop on the top right corner.
Click Develop from the top drop-down menu, and then New Preset Folder.
In the pop-up window, name the new folder. If you have a lot of Black & White presets, name the folder appropriately so that you can find your presets logically.
The new preset folder can be found under Presets, on the left hand side of your screen.
Right click on the new preset folder and click Import. Browse to the location where your presets are saved, and select the presets you want to load, and click Import. By holding down Ctrl, you can select multiple presents at once.
Click on the new preset in the Presets tab on the left, and use the development tools on the right to tweak the preset until you’re happy with the end result.