There is a particular formula function called RNGMERGE in the financial reporter that is used for summing together non-consecutive accounts and/or departments into a single cell. In a nutshell, RNGMERGE looks at one cell to get a set of accounts, a different cell to get a set of departments, and determines all the combinations of accounts/departments to arrive at a sum.
The easiest way to see the correct syntax is to create a new financial statement by dragging an Account Group from the View Account Groups screen onto a blank sheet. On the screen that presents SmartSheet options, select the 'Departmental Comparative' option. From here, you can select one or more departments, masks and/or ranges, and also 'Sum Selected Departments'. When the sheet is created, each department/mask/range will be in a separate column. The formulas used for outputting the dollar amounts use the RNGMERGE function for calculating the account/department key.
If you already have department masks set up, you can select these and sum then together using the procedure above. I believe you have to select a 'blank department' separately as above, and cannot create a range say from blank to 399. It's a little trickier to deal with blank departments in formulas along with non-blank departments.
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Softrak Tech Support