Adjustment Layer Issues

Hi there, I have a music video with many clips. I have one adjustment layer over all of the clips. I'll call this my MASTER adjustment layer.

This is great for most of the video, however, there are some clips where I need another adjustment layer for a single clip here and there.

When I add a NEW adjustment layer for these small single clips here and there and I edit the color information on those NEW adjustment layers it affects the MASTER adjustment layer too! Very frustrating...

What am I missing?

There must be some setting that is active that I need to de-activate?

I am still very new with DaVinci Resolve. Can your answers please be something you would tell a 10-year-old who is using this program for the first time? Very layman's terms please

This is actually an issue when I make changes to individual clips. If I do an experiment and I select one clip and go into the "color" tab, and make that clip black and white it makes all the clips black and white. So it is not just an adjustment layer, it is any time I make any change to any clip or adjustment layer in the "color" tab, it applies that to everything. So if I want to make one individual clip have more saturation and contrast and I select it, bring it in to "color" and make that change - it effects all the clips.

Adjustment Clips affect all tracks underneath them, so if you add an Adjustment Clip above another one, it will affect it as well. You could always remove the first one over just the area you are adding the new one to and just do the whole correction with the one Adjustment clip.