Does each positive leg screw correspond to a neg buss screw or does it matter? Does it matter if a positve wire attaches to one side of the panel and the neg wire is on the opposite side or should they both be coming off the same side?
Not so fast there!
Some Fuse Blocks include a Ground Bus within the Fuse Block.
And while it makes more sense when you come back in a year and try to figure out which ground is associated with which fuse;
It makes no difference operationally or electrically in what order, or where, the Positives and Negatives are attached.
If you have a touch of OCD you will be forced to place them in the same order however.
Yes. That is true. In fact the one you bought may be this one that does have a negative bus. Negative bus is on the top.