• Click on your modpack card, at the home-screen.
• You can disable any mods, shaders, and resource-packs, by clicking on the Toggle button.

• Click on your modpack card, at the home-screen.
• Click on ⚙️ Options.
• Scroll all the way down and click on 🔒 Unlock.

• Navigate back to the ⬜ Contents section.
• Now, you can disable any mods, shaders, and resource-packs, by clicking on the Toggle button.

• Select your modpack card.
• Click on the Edit button, on the sidebar.
• A new window will open. Select Mods on the tab list.
• Find the mod you need to disable, and uncheck the checkbox.

The same steps can be repeated for resource-packs and shaders.

• Click on the Edit Mods button, below your OptimumFuse instance.
• Check any mod, shader or resource-pack you want to disable.
• Click on the Disable Selected button.

As always, refer to your launcher's documentation.