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Do you have sufficient rights ? try going to the site settings and see whether you can access the content types...you find them on the left under 'Web Designer Galleries'
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Do you have sufficient rights ? try going to the site settings and see whether you can access the content types...you find them on the left under 'Web Designer Galleries'

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I created a content type whose parent is a document. &nbsp;I then created a document library and in the advanced settings enabled content management of content types for the new document library. &nbsp;I then went to the library settings wanting to add the new content type for the library and there is no add content type to allow me to use this new content type.<br />
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I am running in Office365.
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I created a content type whose parent is a document.  I then created a document library and in the advanced settings enabled content management of content types for the new document library.  I then went to the library settings wanting to add the new content type for the library and there is no add content type to allow me to use this new content type.

I am running in Office365.

Office 365 Missing Add Content Type for Document Library

Microsoft Sharepoint is a software platform and family of software products used for collaboration and web publishing combined. These capabilities include developing web sites, portals, intranets, content management systems, search engines, wikis, blogs, and other tools for business intelligence and collaboration. SharePoint has a Microsoft Office-like interface, and it is closely integrated with the Office suite.

Microsoft SharePoint

Office 365 is a group of software plus services subscriptions that provides productivity software and related services to its subscribers. Office 365 allows the use of Microsoft Office apps on Windows and OS X, provides storage space on Microsoft's cloud storage service OneDrive, and grants 60 Skype minutes per month. Office 365 includes e-mail and social networking services through hosted versions of Exchange Server, Skype for Business Server, SharePoint and Office Online, integration with Yammer, as well as access to the Office software. All of Office 365's components can be managed and configured through an online portal; users can be added manually, imported from a CSV file, or Office 365 can be set up for single sign-on with a local Active Directory using Active Directory Federation Services.

Microsoft 365

Content management (CM) is a set of processes and technologies that supports the collection, managing, and publishing of information in any form or medium. When stored and accessed via computers, this information may be more specifically referred to as digital content, or simply as content. Digital content may take the form of text (such as electronic documents), multimedia files (such as audio or video files), or any other file type that follows a content lifecycle requiring management.