network arguments and loraplus

[SunexJ]

Hi, a person who got interested about lora training(a beginner), soo

in sdxl lora metadata I saw
"ss_network_args": {
"loraplus_lr_ratio": "16",
"dropout": null

"ss_network_args": {
"loraplus_lr_ratio": "16",
"loraplus_text_encoder_lr_ratio": "4",
"dropout": null

what is this? and how do we put these in kohya ss?

And "modelspec.encoder_layer": "2", how to change modelspec encoder layer value?