Hi, very similar to ERC1400 protocol.  Focus on stocksplits, dividend payouts and voting.  Reasonable steps also needs to be taken to ensure only accredited/sophisticated/professional investors may invest depending on the type of PPM filing.

ERC20 protcol can`t be used for security tokens as the regulator needs to have the ability to recall the tokens.

Here is a video indicating how positive the landscape in South Africa is for blockchain directly from the President:

https://twitter.com/mobuico/status/1127831935257128961?s=21