1. **Launch Studio One:**

Open Studio One on your computer. If you don't have it installed, download and install it from the official PreSonus website.

2. **Create or Open a Project:**

Start a new project or open an existing one where you want to add vocal presets. You can create a new project by selecting "File" > "New" from the menu.

3. **Add Vocal Track:**

Create a new vocal track by selecting "Track" > "Add Audio Track" or "Add Instrument Track" depending on the type of vocal recording you're working with.

4. **Open Mixer:**

Click on the mixer icon or go to "View" > "Mix" to open the mixer window. This is where you'll manage your vocal presets.

5. **Select the Vocal Track:**

In the mixer, locate the track that corresponds to your vocals. Click on the track's name or number to highlight it.

6. **Insert Effects:**

In the mixer, find the inserts section for the selected vocal track. Click on an empty insert slot to open the plugin browser.

7. **Browse and Select Vocal Preset:**

Browse through the available plugins or use the search function to find vocal presets. Studio One may come with its built-in plugins, or you can use third-party plugins. Choose a vocal preset that suits your project.

8. **Adjust Preset Settings:**

After adding the preset, the plugin interface will open. Adjust the settings to fine-tune the preset according to your preferences. Pay attention to parameters like EQ, compression, and reverb.

9. **Save Preset (Optional):**

If you make specific adjustments or settings within the vocal preset that you want to reuse, consider saving the preset. Studio One often allows you to save and recall your own presets for future use.

10. **Mix and Export:**

After adding and configuring your vocal presets, mix your project to achieve the desired sound. Once satisfied, you can export your project in the desired format.

It's essential to note that the availability of vocal presets may depend on the plugins you have installed in Studio One. Some plugins come with presets specifically designed for vocals, while others may require manual tweaking for optimal results. Always refer to the user manuals for specific plugins for detailed instructions.