William, not sure whether this will be of any help, but here is one way how to get user entries to which eduPerson attributes can be added:
1. Create all users you need in web UI as usual, with attributes it allows you to use
2. Move into container and create file `/tmp/.pw`, place your LDAP admin password there (by default it's the same as the one you are using to access web UI)
3. List all users you've just created using LDAP console tool. Here is example of search command: `# /opt/opendj/bin/ldapsearch -h 127.0.0.1 -p 1636 -s sub -T -Z -X -D 'cn=directory manager,o=gluu' -j /tmp/.pw -b 'o=gluu' -z 5 '(uid=*)' uid`. If you are starting at freshly installed instance, there is only one user by default, with uid `admin`. So all the rest will be the ones you created.
4. On the previous step you were presented with DN for each user entry it found. Compose an ldif file `~/add_objctlss_eduperson.ldif` with structure like below:
```
dn: your-1st-dn
changetype: modify
add: objectclass
objectclass: eduperson
dn: your-2nd-dn
changetype: modify
add: objectclass
objectclass: eduperson
...
dn: your-nth-dn
changetype: modify
add: objectclass
objectclass: eduperson
```
Now run next command: `# /opt/opendj/bin/ldapmodify -h 127.0.0.1 -p 1636 -Z -X -D 'cn=directory manager,o=gluu' -j /tmp/.pw -f ~/add_objctlss_eduperson.ldif`. This will add `eduPerson` objectclass to all your users. You should be able to add `edu*` attributes to them in web UI from now on.
Let us know if you'll still have some difficulties to apply this workaround. Please describe your use case in more details so we could suggest a better option.
Please also note that this issue doesn't affect user entries created by Cache Refresh feature, so your other option could be to rely on it for user creation as a workaround (assuming you have LDAP backend in your network, containing some user data). You can find information on how to utilize CR [here](https://gluu.org/docs/ce/3.0.1/admin-guide/user-group/#ldap-synchronization). There are also 3 video tutorials on the subject [here](https://www.youtube.com/watch?v=VnyCTUCRkic)