When I add a junction box they are completely predefined. Is it possible to create a custom junction box that I can define the box geometry (length, width, height), the number of knockouts, and the diameter of the knockouts?
Thanks
You can create a custom junction box in your current drawing by using the MVPARTCONVERT command to convert a 3D solid or block to a mvpart. During the command you can define connector size and location. See the article below for creating the part using content builder.
You can also follow a similar method and create a catalog based part using a more advanced version of content builder.