I've made a change on one computer/device, how can I make changes show up immediately on other computers/devices?
Any Vault/data changes are synced to the server immediately and then pushed down to all devices/machines.
If you are not see an update on another device/machine right away, you can force a refresh:
On the computer/device where the change was made, go to the LastPass Icon > Tools > Advanced > Refresh Sites. A logout also refreshes and forces a push/pull of data to and from the server. If on a mobile device, visit the LastPass App's menu to find the refresh option.
You can then refresh sites on all other computers/devices you are currently logged into. Otherwise the changes will reflect on the next server push/pull or the next time you log into that new computer/device.