param sets

gistfile1.txt

[Parameter(Mandatory=$true, 
                   Position=0,
                   ParameterSetName='P1')]
        [ValidatePattern("\w{2,5}")]
        [string]
        $Board,

        # Param2 help description
        [Parameter(Mandatory=$true, 
                   Position=1,
                   ParameterSetName='P1')]
        [ValidateRange(0,99999)]
        [int]
        $ID,

        # Param3 help description
        [Parameter(Mandatory=$true, 
                   Position=0,ParameterSetName='P2')]
        [ValidatePattern("\d{1,5}")]
        [int]
        $SEID