Meetup Group URL: You need meetup group URL. So you have to go meetup.com and copy your group name from the URL. Example:

http://www.meetup.com/your-group/

 

Import Type: If you choose one-time-Import it will import only one time. If you choose scheduled import it will give you the option by once Daily, Once Hourly, Once-Weekly. If you select once hourly the import will run 1 hour after you save this page, If you select once Weekly the import will run 1 week after you save this page.

Import Into: If you choose Meetup Events your event import into Meetup Events.

 

Once you have everything configured, click the Import button and your events will be added to Meetup Events.

Now you can see events on Meetup Events..so this way you import your event using Meetup Group URL.