I have never follow those directions.
I pop open a side first. This allows me to secure a tether to an anchor on the wind side. Then get another side open and secure tether to another anchor. No, shelter tumbling in the wind now. I can then find the proper anchor point properly afterwards on the wind side and move the tether.
If not windy. The side allows me to lift it up and then over myself. Thus allowing me to be on the inside to push out the other hubs, without getting my gloves pinched/caught. If I was wanting to hurry can probably do it in 30-60 seconds.
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It gets easier when one knows how to set up the shelter before deployment. Always make sure that the roof part is ready to be deployed. I lift it up a little bit just so. The last thing one wants is to deploy one side of the shelter that binds the other poles and side/roof and then one is forcing the whole shelter to unbind/untangle itself. That's how a pole or hub usually breaks, by over forcing.