Can I transfer the funds by depositing cash directly to the ATS account or through Demand Draft?

No, you cannot transfer the funds by depositing the cash in an ATS account directly or through Demand Draft. According to SEBI rules, funds should only be transferred from a registered bank account. This is applicable not only for ATS but for all the stock brokers in India. To know how many ways you can transfer funds to your ATS account, see How many ways can I add funds to my ATS trading account?