Someone

Pool {
    Name = Default
    Pool Type = Backup
}

Pool {
    Name = Full-Pool
    Pool Type = Backup
    Recycle = yes
    Recycle Oldest Volume = yes
    AutoPrune = yes
    Volume Retention = 6 months
    Maximum Volume Jobs = 1
    Label Format =  "${Client}-Full-${Month}-${Day}-${Year}";
#    Label Format = Full-
    Maximum Volumes = 100
}

# Differential Pool.

Pool {
    Name = Diff-Pool
    Pool Type = Backup
    Recycle = yes
    Recycle Oldest Volume = yes
    AutoPrune = yes
    Volume Retention = 40 days
    Maximum Volume Jobs = 1
    Label Format =  "${Client}-Diff-${Month}-${Day}-${Year}";
#    Label Format = Diff-
    Maximum Volumes = 100
}

# Incremental Pool.

Pool {
    Name = Inc-Pool
    Pool Type = Backup
    Recycle = yes
    Recycle Oldest Volume = yes
    AutoPrune = yes
    Volume Retention = 7 days
    Maximum Volume Jobs = 1
    Label Format = "${Client}-Incr-${Month}-${Day}-${Year}";
    Maximum Volumes = 100
}