Little help with defcustom

[Jean Louis]

I need little help with defcustom. I would like to define defcustom
structure for:

Multiple inserts INS DEL:

- Server name
  - Host name
  - User name
  - Password 
  - Port number (integer up to 65535)
  - Activated (boolean)

And then to define second defcustom structure with multiple inserts
INS DEL:

- Server name (referencing the above server name)
  - Set name (belonging to this server)
  - Node ID (integer, by default empty)
  - Updatable (boolean)