instead of only delivering online training, if there is an option for trainers to proctor the lab.
for example,a training institute/college is conducting online trainings for 10 students and they are planning to provide online labs. students where given remote access to lab machine located at institute/college Datacenter.
if there is a option where all these 10 sudents join the lab session and instead of tuning on their video they all share the screen and the trainer can monitor all 10 students activity at same time. and all these 10 sessions will be seen only by the trainner.
if a student need help they raise hand and traininer immediately take control of the student pc and provide support.