I'd like to use the reporting collection (i.e. excel report writer plus other components) to build a spreadsheet that contains some merged cells. Is that possible? I'm using PP 2017.
Here's a very simple screenshot illustrating what I'd like - the 1st row has the cells in columns A and B merged:

Here's a very simple screenshot illustrating what I'd like - the 1st row has the cells in columns A and B merged: