How can I make buildings constructed like night elf buildings?

[Vampskelly]

I am trying to make a custom race for a scenario, and I would like my workers to function like the night elf wisps. Most buildings would not consume the workers, but what would I do for those that do? I cannot seem to find these features in the unit editor.
For example, I would like the worker unit to be consumed in the process of making the troop production building, but not the town hall or food building.
thank you in advance for your help and time.

 

[Cheshire]

set the workers race to night elf.

 

[mancandle]

set the workers race to night elf.

You also need to add the 'Ancient' classification to buildings that you want to consume the worker

 

[Vampskelly]

You also need to add the 'Ancient' classification to buildings that you want to consume the worker

thank you both!