http://rehubdocs.wpsoul.com/docs/rehub-theme/snippets/how-to-disable-vendor-blocks/It's mentioned in documentation where you can place css code 

hi

If you want to hide “Manage your Shop” link in dropdown user menu, use code

.user-editshop-link-intop{display:none}.................................... but where i put this code ?

If you want to hide Manage your order link for customers, use code

.user-dropdown-intop-menu .user-editorders-link-intop.menu-item {display: none !important;}.........but where i put this code ?

thank you