How can i add to the page a calendar , diccionary, and a calculator?

Hi @dv shops16,

If you're comfortable with coding, you can customize your community to include these items by inserting HTML code. This can be done by going to Admin Settings > Themes > Advanced Settings > HTML. 
 

If you have a specific question regarding HTML codes, you can find the answer here20 in our support community, under the topic page of "HTML".