If it looks like this, there are two factors that come into play in setting the intonation:
One is the placement of the individual saddles that can be moved forward and back on a screw. The second is the position of the entire bridge. You/he can use whatever combination of positions that gives you the desired intonation.
Setting the intonation on a guitar of that type is pretty basic: your guitar technician should not have let it go out of his shop that way.