How to change the horizontal axis and legend in a bar chart?

Good day everyone!

I have been puzzeling for hours on how to change the horizontal axis on my bar chart. Currently it is automatically labelling them with 1,2,3,4,5. However, I need them to be labeled (i) (ii) (iii) (iv) (v) AND then I need the legend to also show (i), (ii), etc... I've already tried it with Format Axis and with changing the descriptions under Select Data... However, under format axis it changes all the labels to the same name and under select data I get the same issue. Can somebody help me?

Kind regards,
Ivy