If your initial enrolment with AMTRA was for anything other than an R-SQP (i.e. an all-species SQP), you may subsequently decide to add one or more of the other species modules. (Note that this is more expensive than enrolling for all the modules at the start.)
Like the initial enrolment, this is essentially a two-stage administrative process:
If you wish, you can book a supplementary training course – remember that this is a separate process, and if you book a training course you must still enrol with AMTRA for the upgrade, and book an exam with AMTRA.