Pasting a list of objects into model

Hello!



I'm creating a lot of models and a need to paste in each model a list of objects and reference each one with the original, the problem is that what i'm doing is very slow because i'm taking about 100+ objects for each model, what i do is this:



Create model

Add Object A

Create new object -> paste list of objects

then for each one of the new objects I reference them to the original

select all objects except A and the relationship whit object A



I really appreciate any help, have a nice day, and thank you for taking the time to read this.