Hi @R.B no this isn’t possible at the moment. The view will open with all columns visible and then the user can close some column groups.
I agree it would be a useful feature to be able to specify a default configuration on opening the view for the first time. We are trialing a new bug and feature tracker. If you want you can be the first non team member to try it out and raise a feature request! https://bitbucket.org/apliqoc3ux/apq-c3-ux/issues
I assume (but not 100% sure) that like column widths if a column group is closed then this setting will be stored in the browser and if the user comes back to the view then it should remember the collapsed column configuration.