How to get the sketch of Assembly parts in part studio?

nayeem_islam_shanto

I am a complete beginner to 3D modelling. Currently, I am trying to assemble a simple Arduino car using parts from public showcase. 



The bluish base for attaching all other parts is designed inside part studio 1. 



I want to make holes and gaps on it for wiring and setting screws. So, I think having the sketch of those parts (the servo motor, motor driver etc) in the same part studio will allow exact positioning for the screw holes. How can I do that? Thank you. 

glen_dewsbury

You may want to go to the learning center and study in-context design. It will help to under stand how to add the holes you want parametrically.
https://learn.onshape.com/learn/course/managed-in-context-design/introduction-to-managed-in-context-workflows/what-is-managed-in-context-design?page=1

nick_papageorge073

Yes, in-context design is what you want for this project.