Click "Send message"  in the blue sidebar enables you to type the message you want to send. Write the message title in the field assigned to it, so the title will appear in bold when sending, and  content type  that you want to send in the message content box.

You can also send emojis by clicking on the face to the left of the message content field. But if you want a message with a ready-made template, you must click on the general settings section and design the template that you want to follow.

you will find the explanation in the settings. You can send a multimedia message supported by WhatsApp such as jpg jpeg png gif audio and music mp3 type mp4 video documents as pdf doc docx xls xlsx ppt pptx csv vcf You can send text with one file of each type in a single message. To send multiple multimedia files, press choose file button repeatedly after completing the current file upload. You can send a YouTube video by copying the video link in the field designated for it and clicking the enter button