At the beginning of the school year, User Security can get pretty swamped with requests, so it might take a few days for your request to go through. In the meantime, your aide can use one of the generic substitute logins for TLC. Go to Blackboard > TLC > Step-by-step Procedures > Setting up TLC > TLC Generic Logins to get a list of logins.
Just remember that Jeffcat does not have the means to set up access to TLC. We're wizards with a lot of things, but that's not one of them! So work with your school secretarial staff, and your aides will be having fun with TLC in no time.