HERE is the data sheet for Shop line. Looks like you need to work fairly quickly. 45 minutes before you can tape, and then you need to clear after 20 minutes and BEFORE 24 hours.

So first color, wait 45 minutes, tape and shoot second color, then clear the whole thing.

Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.