Yes, you can do that. at least you can assign permissions on individual vCenter Server objects and then use the same account to connect to vCenter Server. Be aware that for every new individual view, you will need to install additional Veeam B&R console, as the vCenter Server cannot be added twice to the same console.
Here is an existing topic with the list of granular permissions required for Veeam B&R, please take a look: vCenter Server Granular Permissions (v6)
SmithJohn wrote:Actually, do there any suggestion to build multi-tenant environment for veeam( want to use veeam enterprise manager as the web-protal for the end-user to manage its backup )
Can you please elaborate this request a bit further? Do you want to allow your end-users create backup jobs for their own VMs and then manage the restore process themselves?