This guide will show you how to do Unethical Modifications locked behind barriers by your administrators on ClassLink
For this, I recommend using these extensions: https://chrome.google.com/webstore/detail/always-disable-content-se/ffelghdomoehpceihalcnbmnodohkibj (use an alternative if you want that lets you whitelist certain sites) https://chrome.google.com/webstore/detail/resource-override/pkoacgokdfckfpndoffpifphamojphii
This guide for now relies on these extensions, things like fiddler would be good replacements for them too.
(This requires a little bit of computer knowledge)
While in ClassLink, press Ctrl+Shift+I and go to the Network tab and look for the settings get request, do not click the one that shows the little settings icon, just the text that says "settings", it should show this request url: https://applications.apis.classlink.com/v1/settings?, after you see this, copy the url and open up resource override, press on add rule and then press on URL -> File, enter in the settings request url into the Match File box, afterwards, press Edit file, then go to preview and just copy everything from there into the code box. Once that is done, look for the "canSetAvatar" and change the "false" to "true" (no quotations), go back to classlink and press Ctrl and the Refresh button, this will trigger a hard refresh. once the page has loaded, you need to go back to Resource Override and press ON, and turn it to OFF, without refreshing your classlink, you can now change your profile picture, have fun :D
More tutorials coming soon