If the sequence you want to ring isn't on the menu, you can pick it from a larger list:
The ticks on the above list indicate which sequences are currently on the menu. As the list is quite short, all the items are on the menu. Should the list grow bigger, and you choose a sequence that isn't ticked, it will be added to the menu, replacing the least-used one currently there.
(The eight-bell sequence named "Hobart" in the list above features the musical row 35271468, which does not seem to have a common name but is rung quite often in Hobart.)
Virtual Belfry comes with a small list of sequences already defined. If you want to add others, you need to use the notation that Virtual Belfry employs. This is explained fully in the help that is supplied with the program. The notation allows you to specify several blows of particular patterns (musical ones, typically) before moving on, if that is your preference, and also allows more than one pair to be swapped at the same time.
No. 1:
2.1.4.6.2.1.4.3.2.4.1.2.3.2.5.1.5.1.5.1.3.5.7.7.5.7.5.7.3.6.
7.3.1.3.3.6.3.4.7.4.7.4.4.6.7.2.4.6.2.6.2.6.5.5.3.5
No. 2:
4.3.4.2.4.3.2.2.5.2.5.1.5.2.5.3.5.1.3.1.7.3.1.7.1.1.3.6.7.3.
2.6.6.4.6.4.6.6.4.1.4.7.2.4.2.5.1.7.5.7.5.3.5.5.5.7.4.3.2.7.7.6
No. 3:
6.4.2.2.4.2.1.1.1.1.1.1.3.3.3.3.3.3.5.5.5.5.5.5.7.7.7.7.7.7.
2.2.2.2.2.2.4.4.4.4.4.4.6.6.6.6.6.6.7.7.5.3.5.7
(The third one could be called "Cycle on Queens" or something similar, since that is what it does.)