I don't have those options in free Avast One, and the settings I do have can't be changed. Theres a lock icon next to Settings.
Unfortunately Avast One is more of a one size fits all, it has more features than Avast Antivirus Free, but it is less configurable. This is why I have stuck with Avast Antivirus Free, it doesn't have the Avast VPN module. Avast One Essentials (the free version) does have a VPN but it is limited in the download limits (it should however still be configurable).
The Lock Icon can mean more than one thing, for me in Avast Antivirus Free it it either not installed or a 'paid' option.
A screenshot of what you are seeing could help us understand the problem.
What is displayed when you click that VPN shield icon (again a screenshot would help) ?
- Attaching Images to your post - When you Click the Reply button it opens a text window for you to post your comment (reply or post).
Click the Preview button, that shows what you have input and expands it to include 'Attachments and other options'. Click that it further expands, here you can attach images, etc. at the bottom of your post.
See my attached image, click to expand.