Where are the settings for this....?

I want control the foliage print size but how?
It should spawn on more landscape components even if my camera is far away.
Please help.

I think this is a restriction to the landscape where it has to add the different components to the builtdata. I do not think this is possible to solve, however once you have started to “paint” on a new component it should work to paint over both components at the same time.