You want to clear accounts and generate new one for one or few of your Groups. 


You can do it at school level and one school at the time. 

You will need to go: 

Menu > More tools > Security > Edsembli connect > Groups > select the group > Edit > select account > select the student(s) > delete > SAVE 



Note that you can select them (checking the box beside the student’s name) or in bulk the first check box 


Then you can create the new ones following this Solution article: