"Open Time Restrictions For November: The company has informed the Association that they intend to place restrictions on UPA 20-C-2-b open time trips from the 20th of November onward. Restrictions will be varied by category dependent on staffing and operational need. The SSC has expressed their disagreement with this policy and is exploring options to address this issue. Please be aware that this restriction will force trips which operate over this period onto awarded lines and will generate additional open time to meet company targets on other dates. We encourage all bidders to ensure their lower bid groups have sufficient pool supply and flexibility with this in mind."

"UPA 20-C-2-b: Up to three percent (3%) of the Line Credit in any Category may remain unassigned, to facilitate trip-trading with Open Flying. Trips set aside for use as OE trips under Section 20-C-2-a shall not count towards this limit."

Can someone who's more seasoned please explain what this means as we go forward to bid this month? Specifically, I don't understand "encourage all bidders to ensure their lower bid groups have sufficient pool supply and flexibility with this in mind."
I also don't understand the statement, "this restriction will force trips which operate over this period onto awarded lines"

Thanks