What are the bare minimum commands to get a 3-switch PC6825 stack working with inter-switch Link Aggregation?

I'm brand new to PowerConnect switches, although I am familiar with the concepts of VLANs, link aggregation, and spanning-tree.

I'm on a deadline to get some new 6248's installed in our racks and have them operating as a stack. What are the bare minimum commands to get:

• Three switches in a stack (master/standby/member)
• 2 ports aggregated between each switch (full redundancy) with NO switching loops

All switches are running firmware v3.3.9.1 (January 2014).

thank-you