I have written a group_by summarise function to avoid typing it out every time. I want to run for multiple variables (columns) in my dataframe. Is there a way I can iterate this, as opposed to typing out new variable each time?

I have written a group_by summarise function to avoid typing it out every time. I want to run for multiple variables (columns) in my dataframe. Is there a way I can iterate this, as opposed to typing out new variable each time?