Once you make a selection from the dropdown, you see the appropriate groups in the *Security* section. In the Security section, click a group and go to its *Subsites* tab to assign the subsites to which the group has access. Click *Only
Duplicating subsites can be useful if you want to create several subsites based on the same general site structure. You can set up a collection of pages, files, and images and use it as a template. When you create a new subsite, instead of starting from scratch you can copy it all from your existing subsite. This will copy all pages, files and images from that subsite into your new subsite.
To create a new subsite template, create a new subsite described above under "Creating subsites" but don't add any domains. Add a name that will make it easy to see that it is a template. Select the new template from the subsites dropdown in the upper right and create the pages and add the files and images you'd like to become part of the
When you create a new subsite, you can now choose to Copy structure from your template. All your pages, files and images will be copied over to your new subsite.
Sometimes, you will have two or more websites that are very similar, but have some small differences. For example, a head office and its 3 satellite offices may have 4 subsites, but only the head office site will have a "Company News" section on the site. In this instance, you can still use the subsites module, and use the 'Disallow page types' ability to remove certain page types from being created on subsites.
To do this, you create a subsite as you normally would, and when editing the subsite, click on the 'Disallow page types?' link. Then, select the page types you wish to remove from this subsite. Note that this process is exactly the same when editing an existing subsite, you just select the subsite you want to remove page types from instead of creating a new subsite.
Now, whenever someone wants to create a new page on the subsite (the 'London Branch' subsite in this case), they will not be able to select the page types you've selected, as you can see below. Note that this restriction doesn't affect full administrators, and admins needs to login to the subsite domain directly (e.g. http://london.site.com/admin/, not http://site.com/admin).
