What's meaning of the "Show the Create site command to users who have permission to create sites"

Hi Tobey, currently the option to 'Create new site' creates two types of sites: (a) Group-based team sites and (b) communication sites. Other SharePoint sites are created in the SharePoint Admin portal.

In our environment, the ability to create new sites from the SharePoint portal 'Create new site' is restricted to the members of a Security Group. (This restriction is done via PS, there is no switch to do this). The ability to create new SharePoint sites from the SharePoint Admin portal is restricted to the SharePoint Admins.

We don't create new Group-based sites using this option, we create a new Office 365 Group which in turn creates the site.

Understanding the centrality of Groups is important. For example, this restriction means that our users cannot create new Teams in MS Teams; instead we link them to an O365 Group. They cannot create a Plan in Planner for a similar reason. We did this deliberately to (a) ensure naming conventions were met for Groups (all of ours start with O365_GRP or O365_PRJ) and (b) prevent the proliferation of both random Groups and related SharePoint sites, and (c) prevent the duplication of SharePoint sites - for example, if the Architecture team in IT created a Team or a SharePoint site called 'Architecture' when a site already exists.

We use the same process (a SharePoint Online list) for users to request both Office 365 Groups and also SharePoint sites. This ensures we maintain consistency and minimise duplication.