As near as I can determine from reading about camshaft timing and belt installation in my '91 Ranger Truck Shop Manual, the key step reads: "Position the crankshaft sprocket to align with the TDC mark and the camshaft sprocket to align with the camshaft timing pointer." I do not find any reference to aligning the auxiliary sprocket with anything, even though your picture shows a mark on that sprocket. It looks like Ford used the same sprocket on the camshaft and auxiliary shaft.

I'd say, "Don't worry about it."