To add the preselection and the creation of the Z candidates branch, you have to:
1) Install the PFanalysis framework:
https://twiki.cern.ch/twiki/bin/view/CMS/PFlowAnalyses
2) Install the ZMuMuForMET package:
cvs co -r April27c -d PFAnalyses/ZMuMuForMET UserCode/PFAnalyses/ZMuMuForMET
3) add to patLayer1_fromAOD_PF2PAT_full_cfg.py:
process.load("PFAnalyses.ZMuMuForMET.zMuMuPreSelection_mc_cff")
process.p = cms.Path(
    process.firstPreSelection *
    process.patDefaultSequence *
    process.zMuMuPreSelection
    )
process.out.outputCommands.extend(cms.untracked.vstring('keep *_zMuMuCandsMuEta*_*_*'))

So Do following:

cvs co -r  Michal_April12 -d   AnalysisDataFormats/PFAnalyses UserCode/PFAnalyses/AnalysisDataFormats/PFAnalyses      
cvs co -r  Colin_April22 -d   PFAnalyses/CommonTools   UserCode/PFAnalyses/CommonTools   
cvs co -r  Colin_April7 -d   PFAnalyses/RootTools  UserCode/PFAnalyses/RootTools       
cvs co -r April27c -d PFAnalyses/ZMuMuForMET UserCode/PFAnalyses/ZMuMuForMET

cd PFAnalyses/ZMuMuForMET
scramv1 b

Edit patLayer1_fromAOD_PF2PAT_full_cfg.py as:

process.load("PFAnalyses.ZMuMuForMET.zMuMuPreSelection_mc_cff")
process.p = cms.Path(
    process.firstPreSelection *
    process.patDefaultSequence *
    process.zMuMuPreSelection
    )
process.out.outputCommands.extend(cms.untracked.vstring('keep *_zMuMuCandsMuEta*_*_*'),'keep* *_dimu_*_*')

cmsRun patLayer1_fromAOD_PF2PAT_full_cfg.py

Add

process.load("PhysicsTools.PFCandProducer.Isolation.pfIsolatedMuons_cfi")
process.pfIsolatedMuons.combinedIsolationCut = cms.double(99999999.)

to

patLayer1_fromAOD_PF2PAT_full_noIso_Prod2.py

• Running PF2PAT standard:

ssh lxplus5.cern.ch

cmsrel CMSSW_3_5_6
cd CMSSW_3_5_6/src
cmsenv
addpkg PhysicsTools/PFCandProducer
addpkg PhysicsTools/PatAlgos
cvs up -A PhysicsTools/PFCandProducer/test/Macros
cmsRun patLayer1_fromAOD_PF2PAT_full_cfg.py

To edit this file (for our requirements):

Pick Zmumu Spring10 sample from Wisc. and send to lxplus313 tmp area: (a solution to see our cfg. files are working properly: giving output, no exception etc.)

process.source = cms.Source("PoolSource",
     fileNames = cms.untracked.vstring('file:/tmp/lovedeep/Spring10_Zmumu_AODSIM_START3X_V26_S09-v1_0006_1EE489A2-CE44-DF11-98B3-90E6BA0D09BB.root')
)

To keep some more info in PatTuples:

# Add PF2PAT output to the created file
from PhysicsTools.PatAlgos.patEventContent_cff import patEventContentNoCleaning
#process.load("PhysicsTools.PFCandProducer.PF2PAT_EventContent_cff")
#process.out.outputCommands =  cms.untracked.vstring('drop *')
process.out.outputCommands = cms.untracked.vstring('drop *',
                                                   *patEventContentNoCleaning )
process.out.outputCommands.extend(cms.untracked.vstring(
         'keep *_particleFlow_*_*',
         'keep *_TriggerResults_*_*',
         'keep *_tcMet_*_*',
         'keep *_caloMet_*_*',
         'keep *_corMetGlobalMuons_*_*',
         'keep *_met_*_*',
         'keep *_pfMET_*_*',
         'keep *_ak5CaloJets_*_*',
         'keep *_offlineBeamSpot_*_*',
))

We get following output:

edmDumpEventContent patLayer1_fromAOD_PF2PAT_full.root 

edm::TriggerResults               "TriggerResults"        ""            "HLT8E29."     
edm::TriggerResults               "TriggerResults"        ""            "HLT."         
edm::TriggerResults               "TriggerResults"        ""            "REDIGI."      
double                            "ak5CaloJets"           ""            "RECO."        
edm::TriggerResults               "TriggerResults"        ""            "RECO."        
reco::BeamSpot                    "offlineBeamSpot"       ""            "RECO."        
vector<reco::CaloJet>             "ak5CaloJets"           ""            "RECO."        
vector<reco::CaloMET>             "corMetGlobalMuons"     ""            "RECO."        
vector<reco::CaloMET>             "met"                   ""            "RECO."        
vector<reco::MET>                 "tcMet"                 ""            "RECO."        
vector<reco::PFCandidate>         "particleFlow"          ""            "RECO."        
vector<reco::PFCandidate>         "particleFlow"          "electrons"    "RECO."        
edm::TriggerResults               "TriggerResults"        ""            "PAT."         
vector<pat::Electron>             "selectedPatElectrons"    ""            "PAT."         
vector<pat::Jet>                  "selectedPatJets"       ""            "PAT."         
vector<pat::MET>                  "patMETs"               ""            "PAT."         
vector<pat::Muon>                 "selectedPatMuons"      ""            "PAT."         
vector<pat::PFParticle>           "selectedPatPFParticles"    ""            "PAT."         
vector<pat::Tau>                  "selectedPatTaus"       ""            "PAT."         
vector<reco::MET>                 "pfMET"                 ""            "PAT."         

To change GlobalTag: go here: Global_Tags_for_Monte_Carlo_Prod

and edit cfg as:

process.GlobalTag.globaltag = 'START3X_V26A::All'           

Above modifications are sufficient for Production1. To submit crab jobs for this.

Now to look into Spring10 samples for ZMuMu and InclusiveMu15 (both samples are our first priority).

• /Zmumu/Spring10-START3X_V26_S09-v1/AODSIM DBSlinkZMuMuSpring10
• /InclusiveMu15/Spring10-START3X_V26_S09-v1/AODSIM DBSlinkInclusiveMu15Spring10

• Set crab.cfg as:

[CRAB]

jobtype    = cmssw
scheduler               =glite
#scheduler    = lsf
#server_name = cern
#server_name =  legnaro

[CMSSW]
#datasetpath=None
datasetpath=/Zmumu/Spring10-START3X_V26_S09-v1/AODSIM 

pset = patLayer1_fromAOD_PF2PAT_full_cfg.py

get_edm_output = 1

total_number_of_events  = -1 
events_per_job          = 20000
output_file = patLayer1_fromAOD_PF2PAT_full.root 

[USER]
return_data             = 0
copy_data = 1
use_boss_rt             = 0
storage_element=srm-cms.cern.ch
storage_path=/srm/managerv2?SFN=/castor/cern.ch

user_remote_dir=/user/l/lovedeep/Spring10/
#user_remote_dir=/user/l/lovedeep/Spring10/Zmumu/Production1/

thresholdLevel=   100
eMail = lovedeep@cern.ch

[GRID]
#ce_black_list = ceprod00.hep.ph.ic.ac.uk
#se_white_list = T2_US_Wisconsin

rb                      = CERN

proxy_server            = myproxy.cern.ch

• To run on both ZMuMu and Inclusive sample, set multicrab as:

[MULTICRAB]
cfg=crab.cfg

[ZMuMu_Production1]
CMSSW.datasetpath=/Zmumu/Spring10-START3X_V26_S09-v1/AODSIM

[InclusiveMu15_Production1]
CMSSW.datasetpath=/InclusiveMu15/Spring10-START3X_V26_S09-v1/AODSIM

• Submit jobs on crab:

multicrab -create
multicrab -submit
multicrab -status
multicrab -getoutput (after jobs are done)

• Status for crab jobs:

Look creating status for ZMuMu:

crab:  Requested dataset: /Zmumu/Spring10-START3X_V26_S09-v1/AODSIM has 2111268 events in 1 blocks.

crab:  106 job(s) can run on 2111268 events.

crab:  List of jobs and available destination sites:

Block     1: jobs                1-106: sites: T2_UK_London_Brunel, T2_IN_TIFR, T2_AT_Vienna, T2_US_Wisconsin, T2_FR_IPHC, T2_UK_London_IC

Look Creating status for InclusiveMu15:

crab:  Requested dataset: /InclusiveMu15/Spring10-START3X_V26_S09-v1/AODSIM has 4377187 events in 2 blocks.

crab:  220 job(s) can run on 4377187 events.

crab:  List of jobs and available destination sites:

Block     1: jobs                1-102: sites: T2_UK_London_Brunel, T2_ES_CIEMAT, T2_IN_TIFR, T2_AT_Vienna, T2_US_Wisconsin, T2_FR_IPHC, T2_UK_London_IC, T2_DE_DESY
Block     2: jobs              103-220: sites: T2_UK_London_Brunel, T2_ES_CIEMAT, T2_IN_TIFR, T2_AT_Vienna, T2_US_Wisconsin, T2_FR_IPHC, T2_UK_London_IC, T2_DE_DESY


mutlicrab -status:

check here:

crab:  You can also follow the status of this task on :
   CMS Dashboard: http://dashb-cms-job-task.cern.ch/taskmon.html#task=lovedeep_ZMuMu_Spring_PF2PAT_72ur0z
   Your task name is: lovedeep_ZMuMu_Spring_PF2PAT_72ur0z 

crab:  You can also follow the status of this task on :
   CMS Dashboard: http://dashb-cms-job-task.cern.ch/taskmon.html#task=lovedeep_InclusiveMu15_Spring10_PF2PAT_i86d9x
   Your task name is: lovedeep_InclusiveMu15_Spring10_PF2PAT_i86d9x 

crab -resubmit 1-106 -GRID.ce_black_list=ceprod00.hep.ph.ic.ac.uk -c ZMuMu_Production1/