AU335 analog out and audio zones

Hi, I am planning to buy a bunch of AU355 for an upcoming exhibition. Does the AU335 analog output work well with 100Ω headphones? Would prefer to avoid headphone amplifiers if possible.

Also... I tried to do an AU335 test project in BrightAuthor Connected (never tried it before). Don't understand how to get more audio zones than one. Can only select "Single Zone" when AU335 is selected as "Target Device".

I want to achive something similar to this:

https://support.brightsign.biz/hc/en-us/community/posts/1260800404130-Brightsign-AU335-play-2-audio-files-at-the-same-time?input_string=AU335%20headphones%2C%202%20audiozone%3F

Any ideas?