Linked clone question

Hello,

On WS 9, created a Vm, then a snapshot, then created 2 linked clones - LC1 and LC2. Then enabled template mode on parent.

Can I run both linked clones at the same time or am I limited to running only ONE at a time?

Also, how is memory allocated to the linked clones? I chose 4GB for parent clone and 4GB for each linked clone when they were created. Does that mean that each linked clone would use - 4GB (parent) + 4GB (clone) OR is it that all 3 VMs - parent, LC1 and LC2 would each use 4GB of RAM when open?

Thanks for your assistance.