Donchian Ultimate

Can I please ask how the support/resistance zones are calculated? Are they basically another Donchian channel with a lesser look back period?
 
Can I please ask how the support/resistance zones are calculated? Are they basically another Donchian channel with a lesser look back period?
No. For example, the upper Donchian line is based on the highest high during the period. Then the resistance line (for the resistance zone) will be based on the highest low during the period.