How to move animation tracks to another section group in Sequencer

Hi, I’m doing an animation project using Sequencer and trying to combine animation together between base animation and additive animation.
The problem is when I add new animation track by clicking +animation on character name, it created new animation section group below the old one that cause animation issue when I try to combine animation together(character go back to bind pose, can’t combine more than 2 animations) so I’m finding a way to move those tracks together but I can’t simply do that by click-drag as tracks in the same group. Thanks