Delta keyframes for armature


I often use “delta location” or “delta rotation” keyframe, but unfortunatelly, i can’t use it for bones (there is no “delta” option in insert keyframe menu when i am in pose mode). Is there any way, how to use delta keyframes with bones?

I need especially Delta Location for bones (i think that delta rotation in pose mode would be useless)

To convert from absolute to delta keyframes press spacebar and search for ‘Delta’