Adding buttons in a row is offten needed in CTAs. It’s easy to do with the following CSS.
Add the buttons you require in the row, they will appear stacked on top of each other.
Then go to the rows Advanced tab and add the following to the CSS Class area.
This was originally from a Geno Quiroz tutorial hence the gq.
gq_r_inline_button
Save and and head to the Divi Options to add the following CSS code.
/** INLINE BUTTONS **/
.gq_r_inline_button .et_pb_button_module_wrapper {
display: inline-block;
margin: 10px 10px 0px 0px!important;}