How to tell lspsaga to display the preview of finder on the right like in the README

[bernardassan]

My finder preview is displayed at the bottom of the list which doesn't give me enough viewing space. I tried max_preview_lines = 70 and that didn't help . I just want to have enough viewing space so whether its below or on the right doesn't matter much . How do I increase the width of the preview pane and if possible move it to the right or left of the finder