How did you create the skeleton? Is the OBJ grouped? Any way, use the Joint Editor tool to move the centre and endpoint, then right-click and align the bones to snap them into place. The right-click menu also has an option to snap the origin of the bone to the end point of its parent, which can simplify matters.
A grouped OBJ is exactly as it sounds, a Wavefront OBJ imported model which is separated into individual pieces grouped together to make a whole. Adding a skeleton to a single unified mesh tends to be a bit easier.
Thx for that information. When i move a bone there seems to be two bones one with red and one with grey which gets confusing . Anyway to get rid of grey bec i cant seem to select it and dont know what purpose it is for