Quick bike question

ask who are managing of building, who will help u

Manually crank it up, or go get a jump to the battery.

Cheers!

Well...  Is the thing humming, yet???

can those bikes be run started or bump started?

If your bike is an automatic and doesn't have a kick-starter, you'll have to do as Wild_1 says and get a battery jump. The security guards at your building will be willing to help you for a small fee (coffee money). If it has a kick-starter, just turn on the ignition key and start kicking it. Also, semi-automatics such as Honda Waves, Dreams, etc. can be push-started - just put the bike in 3rd or 4th gear, turn on the ignition, and get someone to give you a good push. It should start right up.

some fully automatic scooter can be run started. You have to run it down a hill for a while than lightly press the left brake lever and starter button. Yeah doesn't make sense in theory.

Or as you said put it in 3rd gear or 4th gear. With a motorcycle you'd put it in 3rd gear with clutch in. Than as you get rolling pop the clutch and downshift to 1st gear.