Here are built-in shortcodes and you can use “Shortcode Generator” to help create sample shortcode in page/post options box.

2 columns contents

[one_half]column1[/one_half]
[one_half_last]column2[[/one_half_last]

3 columns contents

[one_third]column1[/one_third]
[one_third]column2[/one_third]
[one_third_last]column3[/one_third_last]

2/3 columns contents

[two_third]column1[/two_third]
[one_third_last]column2[/one_third_last]
[one_third]column1[/one_third]
[two_third_last]column2[/two_third_last]

4 columns contents

[one_fourth]column1[/one_fourth]
[one_fourth]column2[/one_fourth]
[one_fourth]column3[/one_fourth]
[one_fourth_last]column4[/one_fourth_last]

5 columns contents

[one_fifth]column1[/one_fifth]
[one_fifth]column2[/one_fifth]
[one_fifth]column3[/one_fifth]
[one_fifth]column4[/one_fifth]
[one_fifth_last]column5[/one_fifth_last]