This depends on a couple of factors!

Firstly, is the Simulation linked to an audit or not?  And secondly, if the Simulation 'IS' linked to an audit, were the 'low' and 'high' pressure set points included in the Audit Wizard configuration for the respective air compressor?  For clarity, this is the 'low' and 'high' pressure set points included as part of the third portion of the 'Select and configure logger' popup called 'Edit installation conditions' (see below)...

If the Simulation is linked to an audit '&' the low & high pressure set points were configured during the Audit Wizard configuration step then you will 'NOT' be able to change the 'low' and 'high' pressure set points of these air compressors on the 'RED' line of Simulation Wizard.  You will neither be able to re-order the compressors on the 'RED' line of Simulation Wizard.

If the Simulation is 'NOT' linked to an audit then Simulation Wizard uses 'default' low and 'high' pressure set points for each air compressor in the Simulation.  You will be able to modify these default 'low' and 'high' pressure set points of these air compressors on the 'RED' line of Simulation Wizard and you will be able to re-order the compressors on the 'RED' line of Simulation Wizard.

Similarly, 'if' the Simulation is linked to an audit  '&' the 'low' & 'high' pressure set points were NOT configured during the Audit Wizard configuration step, then Simulation Wizard uses 'default' 'low' and 'high' pressure set points for each air compressor in the Simulation.  You will be able to modify the default 'low' and 'high' pressure set points of these air compressors on the 'RED' line of Simulation Wizard and you will be able to re-order the compressors on the 'RED' line of Simulation Wizard.