You can complete the full KYC using the Video KYC feature in InvestWell Mint. The Video KYC feature is a part of the IIN/UCC/CAN creation process.
You can create a Video KYC link and share that with your investor. Investwell Mint can be used to generate this Video KYC link. You'll have to send this link to the client yourself.
To generate a fresh Video KYC link go to the Invest Online menu >> Profile list. This is available in your Advisor Portal.