You can install MATLAB on the machine where the license manager runs as well as on client machines. You can install all kinds of older releases (in different directories) on all of those machines. You need to look out for
- Your license manager should be set up in a way the R2019a release can get administrated, meaning FLEXnet version and MLM vendor daemon and license file needs to be on the current status.
- License model: If you e.g. have a concurrent professional license (education as well as commercial), you are fine, but check the license regulations for other license types you may have.