Few other ways to get servers into a View, although if you're only doing one or two you're still probably better off doing it the way you've been going.
1) Import an XML,CSV, or TSV file containing the View changes you want to make. Note that this will overwrite any existing View by that name.
CSV syntax :
Viewname, [[sub-view1],[sub-view2],...] hostname
Example CSV :
HR_Servers,myhrserver1.company.org
HR_Servers,myhrserver2.company.org
HR_Servers,myhrserver3.company.org
HR_Servers,Critical_Servers,mycritserver.company.org
2) Talk with support or Engineering about getting a stored query called "sp_import_view" added to your DB that will help with doing imports. Doing it this way requires some prep work and is multi-step, but is still faster if you're building views with hundreds of servers.
3) If what you're really looking for is a view that contains all the clients on a particular Master there's a much easier way to get it - view automation.
a) create parent folder, i.e. "Masters_NetBackup"
b) create sub-folder, i.e. "NY_Master"
c) add only the Master to the sub-folder.
d) right-click on your parent folder and select 'View Automation' and then 'List Tasks'
e) Hit 'create' to add a new task
f) name the task
g) Select the schedule to run on. Create a new one if needed.
h) Hit OK.
i) Hit close.
Now on whatever schedule you selected, VBR will go through and add all of the client objects for that Master to the sub-folder.
Also, keep in mind nothing in View Builder can have the same name as anything else - all folders are technically objects as well. So you can't have a parent folder named the same thing as the object it contains.
Hope this helps.