I have lectures and seminars for several different modules spaced throughout the week, in much the same way as you might have lessons for different subjects at school spread through the week. Pretty much everything works on this basis, unless you have to do a placement within the academic year (not a sandwich), or you are doing a dissertation at the end of a masters.
The only exception may be with some modules that count for less credit (typically 10 or 15 credits when other modules are 20 or 30) that may run for only one semester, with another module following in the subsequent semester.