Reset And reboot

A Reboot is a (graceful) Shutdown followed by a Start, much like rebooting a physical machine using the "shutdown and restart" option. It is commonly used to apply changed to the virtual hardware configuration (which Proxmox does in between the shutdown and start) without having to shutdown and wait for it to complete before starting it again. A Reset is very much like unplugging the power cord temporarily and turning it on again (or pressing the reset button on a physical machine) and does not allow for changes to the virtual hardware to be applied (much like you won't be able to applied physical changes in between pressing and releasing the reset button).
 
And this just resets the specific VM not the node right? I dont want to break anything else on the same node
If you select the VM, yes. The node has separate Reboot and Shutdown buttons, but not a Reset button, so it sounds like you selected the VM correctly.
I don't know what that VM is for and whether other VMs depend on the services it provides. Can you please tell us what you want to achieve? Maybe someone can then explain the actual steps to do it, instead of generic explanations about the user interface.
 

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