Common use

Using geckolib model on your NPC

First of all you should open the model editing screen of an NPC and press Entity button.
Then you should select Geckolib Model there

Then you need to press the model selection button and choose one of the models from the list

Selecting geckolib animations

In order to select geckolib animations you need to press Model Animation button:

There you can select an animation file:

And then choose an idle and walk animations if you want:

Final steps

And finally you need to select a texture for your entity.
It is done as usual in the Display tab of NPC settings

Congratulations! Now you have your own custom modelled entity!