This kind of composition is more suitable to do with RailClone instead of ForestPack.
However if You insist on using ForestPack I would suggest You using two ForestObjects = one for clothes and hangers with Distribution mode Path:
![](https://i.imgur.com/5YNk1Ab.png)
And Separate object for frame. It should use Distribution- Reference Mode-> Pivot
![](https://i.imgur.com/keMSo1e.png)
These two combined Forest Objects would give result something like this:
![](https://i.imgur.com/BLDZoXc.png)