Add rows inside added row I'm trying to create content type which can be used to add Workouts. Content type has fields: Exercise, Set and Reps.

First user chooses Exercise (this is autocomplete field). Then he can add Set(s) to thise exercise (unlimited amount of sets can be added). Every Set should be added by clicking Add new row. For every set user can add reps.

Then User can add second Exercise and sets and reps to it. Etc.

See picture:



I have tried to use Multifield -module, but it does not allow multifield inside multifield.

Any suggestions how to achieve this kind of functionality?
Have you tried Field collection module?