'Gaps' between bars in clustered bar chart

Hi all,

I have come across a problem with BI, and I need to know if a solution is possible, or if I need to inform the directors of my company that it cannot be done.

Essentially I have columns with financial data (so I cannot attach a photo) in the rows, with each column denoting a month in the financial year. The sum of these months is the 'values' section of the viz, on the Y axis. The x axis is down as the different countries associated with each data row. As a result, I have several 'clusters' of bars, with no 'gaps' between the bars. The directors state that they need the gaps there to be able to read the chart properly. Is there any way of adding this in? To date I have found no way of doing so. Many thanks.