Need help on membership creation.

I am not sure what to do on the createuser.

 

I have my webconfig file:
 <membership defaultProvider="OL_MembershipProvider">
      <providers>
        <add name="OL_MembershipProvider" connectionStringName="connstr" type="System.Web.Security.SqlMembershipProvider" requiresQuestionAndAnswer="false"/>
      </providers>
    </membership>
    <profile defaultProvider="OL_ProfileProvider">
      <providers>
        <add name="OL_ProfileProvider" connectionStringName="connstr" type="System.Web.Profile.SqlProfileProvider"/>
      </providers>
      &l ...