If you’re using classic editor, then add_meta_box() will do the trick. Just make sure you set the context as “side”.
With Gutenberg I think you’ll need a Panel component. I’m not too familiar with Gutenberg so I can’t comment more on this.
If you’re using classic editor, then add_meta_box() will do the trick. Just make sure you set the context as “side”.
With Gutenberg I think you’ll need a Panel component. I’m not too familiar with Gutenberg so I can’t comment more on this.