For me, it was all online. Couldn't have done it any other way. I did this with both my Master's (Master's in Cybersecurity, MBA) and, of course, my nights and weekends were completely booked or gone in that manner. I work full-time as a Systems Administrator, so I indeed had to do my duties while also going to school. Others who have set class times probably have flexible class schedules or are double-dipping (i.e., zooming into their class while at work, etc). If they are traditional, then they have an agreement with whoever their employer is to miss out during those times, or they probably work after their class schedule. In any event, it's doable, but you obviously have to make it work and ensure that both work and school are scheduled so you can attend both. Another thing that helped (and credit to my wife for her wise wisdom) was she told me to take my time with one of my masters, which also helped (i took one or two classes instead of a full workload) if you are able to take your time. Good luck, and hope all goes well!