Lower torso not moving whole body

[Anovi_x (giftfromv1rgo)]

Currently I’ve been trying to animate a rig and in the past I’ve always moved the full rig by moving the lower torso as demonstrated below

robloxapp-20230403-1702181.wmv (583.5 KB)

But I tried doing the same for a fully custom rig made with only bones but I can’t move the legs with it as it only moves the upper body when move or rotate the lower torso

robloxapp-20230403-1643029.wmv (317.9 KB)

Is there any way to make it so the lower body does so or atleast make some other part move the entire rig?

[Poltoq (polt)]

I don’t think you have selected the “root” of the rig. It’s probably the first bone added if you can remember which one that was. Try playing with every bone to try and find it.