Change the gain of audio regions in Logic Pro for Mac - Apple Support

You can change the gain of audio regions with the Gain tool, or in the region or cell inspector.

Apple Loops in Logic Pro for Mac - Apple Support

Logic Pro for Mac inspector interface - Apple Support (ME)

I/O utility in Logic Pro for Mac - Apple Support (English)

Audio Editing settings in Logic Pro for Mac - Apple Support

Update Logic Pro X: A Quick and Easy Guide

Logic Pro for Mac advanced quantization parameters - Apple Support (CA)

Logic Pro User Guide for Mac - Apple Support

Channel strip controls in Logic Pro for Mac - Apple Support

Change track icons in Logic Pro for Mac - Apple Support (CA)

Resize and reorder global tracks in Logic Pro for Mac - Apple Support