They took a weird stance on training when they resumed a while back.
The training resumption plan that was sent out said that you can train on 50% of the positions you can normally train on. So if you have 6 positions that you could train on simultaneously, you can now hypothetically train on 3 of them simultaneously.
Except JCF went with: we have 6 trainees, we can only allow 3 of them to train. Once one certifies, we'll think about letting someone else re-enter training. (not sure of their exact trainee numbers.)