2.1 Enter your details once only, it saves users the trouble of having to fill in the registration form at each SE. The information required is:

Domain name.
Website title.
Site description.
Category. Choose a relevant category under which your website will be indexed. The success rate of the submission process depends on how many of the SEs support that category.
Descriptive keywords
Personal details.
2.2 Set the submission timeout value, for the submission process not to be interrupted by SEs that are not responding.