Yeah, we support multi-signatures, they will works next way:
Investors' funds are stored in the corresponding purses with multi-signatures. The multi-signature uses 3 keys: the keys of the investor, the manager and the platform. The manager and investor keys are stored directly on the manager's and investor's computers in the electronic wallet in the form of a browser extension, which allows to limit the platform management using the RPC protocol. To perform any transaction from a wallet that uses the multi-signature technology, you need at least two keys.