if you want to reply to a comment. Go to all comments section on the menu, next just click on the Reply on the comment you like to replay to, which is on the bottom of every comment. click on that, a block will pop up and it will show who you are replying to. Fill your response in the comment section there and click on Post Comment.
if you do not want to reply to a post but want to create your own fresh Post. Click on Add New Post with video/image write your comment and click on post comment there. or Go to the bottom of any comment page in the leave a comment section and write in the comment field. This will be a new discussion that you started, and the others will reply to you.
if you are adding a youtube link, or any other link for a video you need to copy and paste that link inside the Comment section block.
if you are adding image, audio, or video from camera or computer then you need to click on the Choose file block and select the image or video from your camera or computer and load it there.
