Add a Run
With this option you can add consecutive issues you own into the database by putting in the information to the first issue of the issue. Cover date will be calculated based on one issue a month.
In addition, you can put in as many runs as you want for a particular title. Once again you will put in the information for the first issue and it will be used to fill in the details for the remaining runs. Cover dates will be calculated for the runs with breaks with the same assumption of one issue a month.
One downside to putting in the issues with runs is that you will also be putting in information for the creators which will change over time. Although creator information is completely optional. As is most of the fields for the comics.
In addition to putting in the information for comics that you own you can also put in the information for comics that you don't by selecting to enter runs with the issue option. With this, you will enter the information and it will be in the database for if you get the issue later. You'll have less entering to do with the comic in the future.