Its written that enable attachments should appear in (item details)overview(layers), and enable editing should appear in settings(feature layers settings) - can't find those options in those sections.
Only the layer owner, or an administrator, can manage the settings for a hosted feature layer and the layers it contains. So, I suppose you do not own the item you are looking at, and you are not logged in as an administrator into ArcGIS Enterprise. If that is true, than it is correct that you do not see the enable attachments and enable editing options.
I hope this is the correct answer to your question.
Thank you, actually i am logged in as administrator and own this layer - and can's see these settings.
I think i saw these settings at ArcGis Online platform - thinking maybe its related to license settings or ArcMap publishing settings.