I am checking on the settings tab but I only have the option to add it on my posts. Please, would be possible to use the plugin on my homepage and other pages I have

Thank you!

How to make a button on the left side like vk.com?

Button is not ordinary:
1. If you press the first time, it raises to the top.
2. If you press a second time, the button returns back (to where you went to the top).

Maybe there is some kind of plugin or code?

For example https://onepagelinks.divisoupdemos.com/

Thanks a lot.
Best Regards.

now it is happening again, but on my other computer!

Thanks
Anes