Here's my story:
I have a wholesale shoes store, my clients come and pick up about 50 shoes (flat price shoes), after a month she come back for returning what she did not sell and pay for what she sold.
I have many multiples payment so I created a payment table and also a returning table.
I definitly have no SQL code skill so everything I created were using calc and relationship.
I'm using invoice template and now I need to add a cell (in the dashboard layout) for what I received per month and don't know how to.
Please some very easy way to do that?
I saw some solution at our forum here but I tried to implement but unsucessed.
My file is attached for any doublt
Thanks a lot.