Theme has various custom post type including portfolio, service, testimonials, client and pricing. By default, each post type items are ordered by published date. If you want to re order them. You can use Post Type Order plugin. Here are steps to add drag&drop order.
- Download Post Type Order plugin from above link.
- Open WordPress Dashboard > Plugins > Add New and upload the plugin. Once you finish uploading. Activate the plugin.
- Now if you want to for example re order portfolio items. Go to WordPress Dashboard > Portfolios > Re Order. Drag item you wan to re order and drop on the position you want. Once you finish ordering. Save changes.
- Repeat step 4 for other custom post type (If you want to re order it).