Waterfall Chart with starting value

[Lolwife1966]

I have a query which contains data for a number of companies (for argument's sake let's call them CompanyA to CompanyG). The query contains a separate record for each comapny for each week.
Two of the columns that are stored against each record are Budget and BudgetVariance.
I am required to create a waterfall chart for each week that has the sum of budget for all companies as a starting value then displays the variance for each company with the total variance as the final column (hope this makes sense).
I can show the variance on the Y-axis, my issue is how can I display the total budget as the starting value, I can't see any way to add a starting value to the waterfall chart.

[KerKol]

I'm trying to understand your requirements...

What I've done in the past to make custom waterfalls is create calculated tables, so that the sum of budget shows first on the X-Axis, then followed by each of the company names with sum of budget variance, then a grand total.

I often used a stacked bar chart.