How to point external/second miner to Zcash Wallet/Server?

Hi i installed unbuntu and installet the zcash wallet and its mining solo, now i want to point my other 2 computer to mine on it and i have rental of 1k sols that i would like to point to my solo mining.
Can any one tell me how to point external miners to my unbuntu server running the zcash wallet/server??

You can't unless you have developed your own software.

so there no of solo mining with more than one rig on one zcash wallet ?
any opensource solo pool for use on my server to point my own miners ?