Enabling SOAP over HTTPs on PI7.0

Hello

We have a requirement to connect PI7.0 to PI7.1 with SOAP over HTTPS. Would you please let us know what all configuration need

1. Setting required to be done on PI7.0 ( Communication Channels, Receiver and Sender agreements)

2. Where to put private key and root certificate in Visual admin

3. Port configuration for outbound and inbound traffic.

4. Enabling of SSL on PI7.0.

5. Any ICM related setting on PI7.0

Thanks & Regards