Proxy Contract for Saving Gas

[cauta]

Bitgo did so well about multisig contract wallet.
Create a implement contract at address: 0x5b9e8728e316bbeb692d22daaab74f6cbf2c4691
and all the rest multisigs are using this address as an implementation of logic code via Proxy for example: 0xD4F5bf184BeBFD53AC276ec6E091d051D0ed459E
i have researched about proxy contract, optimize and create the new one but it can not clean like bitgo did
Anyone have some ideas about this?