I've numbered by blocks / sample sites - why are they appearing in the wrong order?

I've numbered by blocks / sample sites - why are they appearing in the wrong order?

When numbering your blocks or sample sites on Sectormentor, it's important to ensure they are prefixed with a 0 - 01, 02, 03, 04 etc.
Or - if you're going up to three digits, you'll need to start with 001, 002, 003.

Otherwise you'll end up with a confusing list which jumps around the place!