Financial Services Agreement-Is the FSA required to be signed/accepted by the customer?

Could you please clarify the following:

1. Is the FSA required to be signed/accepted by the customer?
2. If yes, what is the required signing/acceptance method—electronic signature, DocuSign, or manually signed document?
3. Can the CSP simply download the FSA from Partner Center and provide the PDF to the customer, or is there a specific Partner Center workflow that must be followed?
4. Once the customer accepts/signs the FSA, does the partner need to upload or record the executed document anywhere in Partner Center?
5. Does Microsoft require any prior approval before the CSP provides the FSA to the customer?
6. The FSA states that it is “effective upon Customer’s Acceptance.” Could you please confirm what constitutes valid customer acceptance?
7. Does it required any action from Partner side as well?