Creating and using Custom Object Class in my Apache Directory Studio

Disclaimer: I am new to the world of LDAP authentication and am learning as I go.

I am in need of a custom object class where I can add custom attributes that is not available with inetorgperson. The current situation is that I think I have created a custom schema with the object class I need, but, I am still unable to choose this custom object class when I am creating a new entry.

After a lot of trying and retrying, reading through multiple sites and suggestions, I finally created a new schema that looks very much like inetorgperson. I arrived here by following the steps below:

1) In my LDAP Browser, under ou=schema, I navigate to cn=inetorgperson
2) Right click on it -> Export -> LDIF Export.
3) I use this as the template and change all occurrences of "inetorgperson" to my custom name.
4) Towards the end of the LDIF file, I changed the m-supObjectClass to point to inetorgperson
5) I then modify the LDIF file to add the custom attributes.
6) I then import this modified LDIF file.
7) I can now see my cn=instinetorgperson right under the cn=inetorgperson.

The attributes seems to be similar.
But, I am still unable to choose this custom object class when I am creating a new entry.

What other information would you need to help me out here.

Thanks in advance