At least for the AMD part, I wasn't able to start mining using the instructions/screenshots provided - they seem to be misleading.

Instead, I used the instructions from https://pool.minertopia.org:

sgminer -k talkcoin-mod -o stratum+tcp://pool.minertopia.org:3833 -u YOUR_WALLET_ADDRESS -p OPTIONAL_PASSWORD -I 20

I also had to add --gpu-platform 1 for sgminer to start with my 6x RX580 configuration.

Have fun mining!