Last time I done this a few year's back I got into a helluva tangle as soon as I opened the hose from the packaging.
Any pointer's as what not to do wrong this time, there must be a smart way to do this I missed the last time.
Vin's method is very good if there is just 1 of you. If there are 2 of you and you do not want to reel it out then I use the following method.
1. Unwrap the hose from packaging and taking the end of the hose from the outside of the reel fit the connector needed to connect to the reel.
2. Connect to the center of the reel.
3. One person holds the hose roll in the middle and unwinds it as a 2nd person reels it onto the hose reel.
4. Ensure that the hose is not tightly reeled on to the hose reel in order to allow for expansion space of the hose when under pressure. This will prevent damage to the hose reel when under pressure.