From the security settings page you can configure what accounts and groups are granted Site Collection Administrator permissions on sites created by MetaShare.
To access this page, you need to have the Security administrator application role.
Recommended
It is strongly recommended that you assign a service account as Site collection administrator and a security group as Secondary site collection administrator in MetaShare’s security setting after activation.
This way you will not overshare with the global administrator that activated the app (that automatically becomes the site collection administrator in MetaShare workspaces) and you can easily manage administrative access to workspaces using security groups.
Caution!
Site collection administrator is the highest permission level within a SharePoint site. This should only be used for troubleshooting or advanced custom settings. To manage access to a workspace, it is enough to assign users to the Owners group in the SharePoint site, that has more limited permissions.