> Your" IT department should consider giving you your own admin account. But it's their call.
Seems like a bit of an extreme solution for one-off installations that are rare enough to not be worth bothering to automate.
Good example of this is scientific software like Gaussian (a "common" quantum mechanics package): needs admin, expensive and strict license that gets audited. It's approved, but we have a single digit number of people using it. It's just not worth the time to automate a script around an install that only happens once every year or so on average, when they can just temporarily elevate the user.
"Your" IT department should consider giving you your own admin account. But it's their call.