Read Only Access to VM in ESX 2.5 MUI

Hope someone there still remember ESX 2.5 ....

Does ESX 2.5 provide the Read Only access to manage VM instances via the MUI, I have a requirement to provide a read only access to VMs on the MUI, i.e. restrict a user from managing the VM to do power off, restart, suspend etc... is there any specific group the user need to be added to or ESX 2.5 does provide this level of access ?

I added a user without adding it to any group, I see the Options tab in the MUI is not accessable to this user however, I still see all the options on the menu to power off, restart guest, suspend ..etc still highlighted ....

Thanks