The theme has the possibility to create 4 different types of posts: standard, gallery, video, and audio. In order to activate these post options, you'll first want to ensure you've installed & activated the required theme plugins.
To create a new post, within your dashboard navigate to > Posts > Add New.
Above your content box & toolbar, you'll see a series of tabs titled Standard, Image, Gallery, Video, and Audio. Select whichever tab you'd like your post format to be in. Each tab will give you different input boxes depending on the content you'd like to add.
Standard Post
A standard post is the default post type. You can add text and images to your post using the tools and content box.
Gallery Post
A gallery post allows you to create a slideshow-type gallery at the top of your post. After clicking the "Gallery" tab to choose this post format option, click the "Pick Images" button within the "Gallery Images" box that has appeared. Select whatever images you'd like from your WordPress Media Library.
Video Post
A video post displays a video at the top of your post. You can share videos from most popular video hosting sites, such as Vimeo or Youtube. Simply copy & paste the video's URL code. When you preview or publish your post, the video will appear.
Audio Post
An audio post allows you to share a music or audio track and displays it at the top of the post. Like the video post, simply copy & paste the track's URL, iframe code. When you preview or publish the post, the track will appear.
Assign a category & featured image
Once you've determined your desired post format, entered your title, and added your content, remember to assign at least 1 category to your post. Additionally, also ensure you assign a featured image to the post in the bottom right corner.