Help with creating building branches for existing buildings

[zhiphius]

Just wondering: Is it possible to create 2, 3 or hell even 5 different branches of a existing building?

example: People construct siege engineer's shop. They want to upgrade it and it shows 5 different choices.

I tried to add 2 new tiers to each of the encampment branches but it didnt work.

Tips on how to add branches or tiers would be appreciated =) (i feel im missing a table somewhere )

[Frodo45127]

It's possible. They did in the Sekigahara Campaing mod. Ask to his creators how to make it.

[zhiphius]

Thanks, done =)