what should be the basic structure to implement RMAD 10.3 in lab

Hello 

I need to setup lab to check with RMAD 10 for 4 DC Server later in production.

1. what would be architecture for RMAD .

2. Can I install RMAD ,Forest Recovery Agent and  Secure Storage Server requirements on same Windows Server 2022 Server.

3. What is network criteria for all these server with DC Server in multi-forest environment. 

4 .do i need to domain join these servers?

any detail related to this will be appreciated.

Thanks
Richa