Installing presets depends on the software you're using. Here's a quick guide for popular applications:
Adobe Lightroom: Go to the Develop module, click the "+" button under the Presets panel, and import your presets.
Adobe Photoshop: Open the "Actions" panel, click the menu icon, and select "Load Actions" to install your presets.
Capture One: In the "User Presets" panel, right-click and select "Import," then choose your preset files.
Affinity Photo: Go to the "Presets" panel, click the "Import Preset" button, and select your preset file.