Look in this folder \var\www\partials. There you will find the miner.html file.
This is where sgminer gets its names from on which algorithms to mine.
Obviously sgminer needs to have the matching name already programmed in it for it to connect to the pools.
I've tried it several times. But I did not do it anywhere. It must either be in sgminer or rather in FW STM.
What was it that you tried? To add the algorithms to the drop down list?
Yes exactly. Also change the algorithm and pool data in \opt\scripta\etc
files miner.conf and miner.pools.json
And Miner ran to default algo: Quarkcoin