hi, I recommend watching the ProTips series from the start, as we cover basics in earlier videos, such as keyboard shortcuts (using the Maya scheme): ru-vid.com/group/PLS-6Oz2H9ieNA5_OQzA3zQsOxt9bWX2wi If you use it, select the object you wanna drop in the constraint, hold X, click in the viewport (anywhere) and hold that LMB, drag in the Relation constraint. (actually that drag n drop is heavily used in MoBu, for example to align or parent object A to object B)