To add new plugins or themes directly to a WordPress site:
Step 1: Go to the BlogVault website and sign in using your email ID.
Step 2: On the BlogVault site listing page, select the website in which you want to perform this operation.
Step 3: It'll take you to the Site Detail page. In this page, find the Plugins and Themes card. Click on Manage.
Step 4: It will take to the page to manage Plugins or Themes. Click on Add New.
Step 5: On the next page you will see a list of plugins from the WordPress repo. You can search for Plugins in the search bar or upload Plugin if you have the file on your PC
If you select Theme, you will get the list of themes available. You can search for Themes in the search bar or upload Theme if you have the file on your PC
NEXT: How do I check active plugins or themes?