This looks like a very simple set up. A well trained/experienced team of four (plus security personnel) could most likely accomplish this task in about 40 minutes or so but there could be lots of other time - consuming task/variables, particularly if installing multiple electric/mechanical triggering devices, etc. Keeping it simple = The team would have to do a detailed recon of the area/rehearse the plan of attack, prep all the demo material like cut the 5 det cord branch lines/sensitize all five det cord branch lines/check electric blasting caps/test initiation system/prep the 5 demo charges (example - M183 Satchel Charges/20lbs of C-4 each - which looks like about the approximate size of the charges used in this video), etc, etc. Next step - when the time is right the team gets to work putting everything in place IAW with the plan. Final steps/Command Detonation Mode - one person stays down range and everyone else heads to the safe area. Final hook-up takes about a minute or so = make a small hole in the ground a couple feet from the det cord main line, place the electric blasting cap/detonator (explosive end/nose down in the hole, turn the receiver switch to the armed position - most receivers have a built-in safe separation timer), after 30 second if the electric blasting cap hasn't detonated connect it to the det cord main line. Head to the safe/reviewing stand area, fire up the popcorn machine, and watch/wait for your target to arrive - then press and hold the transmitter fire button = boom.