Themes

Disable installation
This will restrict the ability to upload themes.

Disable switching
This will restrict the ability to change the theme to any other uploaded theme.

Disable deletion
This will restrict the ability to delete themes.

Plugins

Disable installation
This will restrict plugins from being uploaded.

Disable activation/deactivation
This will restrict activation/deactivation of plugins

Disable deletion
This will restrict the ability to delete plugins.

Add “Upload” to sub menu
This will add an “upload” tab to the plugin menu

Hide plugins in list
This will allow you to hide specific plugins from the plugin page.