I don't think that there is a way to see the image of each of the connection available in the RAM Connection module in STAAD.Pro. I let anyone else to correct me if I am wrong.
All the connection types which are available in RAM Connection v11 standalone should be available in the latest STAAD.Pro version as well.
Some connection types may not exist in RAM Connection. In that case there is another software which Bentley delivers for the connection design called LIMCON. So if some connections which you would like to design do not exist in RAM Connection, you may check LIMCON. Please note that all the connection types which are currently available in LIMCON should be implemented in RAM Connection in the nearest future.
You are correct - it is currently not possible to create custom connections in the RAM Connection module in STAAD.Pro.
All the connection types which are available in RAM Connection v11 standalone should be available in the latest STAAD.Pro version as well.
Some connection types may not exist in RAM Connection. In that case there is another software which Bentley delivers for the connection design called LIMCON. So if some connections which you would like to design do not exist in RAM Connection, you may check LIMCON. Please note that all the connection types which are currently available in LIMCON should be implemented in RAM Connection in the nearest future.
You are correct - it is currently not possible to create custom connections in the RAM Connection module in STAAD.Pro.