When creating a default line balance one of the constraints is inspection. This is based on inspection groups these are used for ensuring that activities are not performed in the same station.
Originally this is to prevent operators from doing a quality inspection on their own work but inspection groups can also be used for other purposes.
To file an activities inspection ID, go to the operation in the activity list tab. here there is an inspection ID column where you can classify the groups that you want to identify the activity or activities that you want to be performed.
In a separate station add an asterisk to the end of the inspection ID name if an activity has an asterisk at the end of the inspection ID name then it will be performed in a different station from the rest of the activities with that inspection ID whether they have an asterisk or not.