It would be comfortable if we could show / hide a group of columns with one click. Google Sheets / Microsoft Excel both allow to group and collapse / expand both columns and rows.
I would like to draw your attention to the feature request on GitLab and ask you to upvote it.
Thanks for sharing your idea @Mary-Lou! 
Hi @olgatrykush
I noticed this request has no weight assigned in GitLab. Does that mean it’s currently not under consideration at all, or is it simply not prioritised yet?
hey @Mary-Lou, it wasn’t accepted yet. I’ll check with the team about this request. 
Thank you @olgatrykush.
It is the one feature I miss every day.