Cannot find "change to technician" botton

Cannot find "change to technician" botton

Greetings, 

I cannot find the "change to technician" botton in the "edit requester form" 

Those user were changed from technicians to requesters but I was not able to change them back.
The Service Desk MSP version is 8309.

I´m I missing something? or is this a bug?

Thanks for your help,
Regards

              New to ADManager Plus?

                New to ADSelfService Plus?