I'm very confused on how to setup Optiminer with flypool on linux

Hi, I recently installed Linux Ubuntu and setup zcash through github terminal commands. It seems to work? Says it’s mining on 8 threads.

But for my PC (1700 8-core AMD CPU / RX480 4gb AMD GPU / and 8 GB DDR4 ram) it seems optiminer is the best bet.

I can’t figure out what I am suppose to type after the “Pool” information in linux optiminer. Where do I get a “User” Username if flypool (unlike slushpool) doesn’t use a workernames?

The username for flypool is “%taddress%.%worker%”