How do I add a contact category?

I am not able to add more names to a category in my mail contact list. How can I correct this?

• I have 90 names in the category and about 540 names in my contact list. I need to add about 200 more names to the category.

• Answer:

  What email account is this? Or is it for a phone? Some email accounts only allow a certain amount. what I do is save them in an email in my saved folder because my email account only allows a certain amount