Sharing option checkbox NOT available

Good day,

I am running Traccar 3.15 latest version on Ubuntu.
As described i should be able to share devices between the accounts
"Settings > User > Devices" and for every users devices i should see a checkbox to share.

I don't see the checkbox. I am using the "admin" account.
Is the option removed in 3.15 ? or a bug?

It's still there. Please provide screenshot.

Anton, Please see screenshot link below. Thanks for you reply.
Link with screenshot from Chrome

I can see checkboxes on your screenshot.

Anton,
Now i understand.
I expected to see a "share" button when selecting the devices.
To share i only need to select the checkboxes and close screen.
Thank you. It works excellent.