Do I have to be the expert?

We didn't end up speaking to the owner of the remodeling company (yet). Two reasons: 1) We ran out of time to chase him down and do it. 2) The Project Manager came back with a semi-decent plan for proceeding. Turns out he had been sick last week, which was the explanation for not communicating. (Always something -- one never knows whether these things are real, but in as much as this is the first time that excuse has been used I'm inclined to give the benefit of the doubt.) So, the timetable still isn't what we want, but he's in a tough spot trying to find a new tile guy to finish the job.

Glass is supposed to be delivered tomorrow, but Liane may have postponed it. We're unsure about putting that in with the tile work unfinished. This decision, strangely, seems to have been put in our (my) court to make. I don't get it. Why would I make a decision about shower glass as it relates to the tile work? I don't know anything about it. Am I supposed to be the expert here? My decision is to do what is best to get the work done in the best way. I don't know what that is. If you have an audio question, I am your man. Construction? Not my domain. Figure it out. Jeez...