First you need to enroll as a shifter by logging into the website https://cmswbmoffshift.web.cern.ch/cmswbmoffshift/runregistry_offline/ Once in the website select "EGamma" in the "Workspace" region. Then in "Tools" select "MyRoles" then select "New Role" and finally "Ask for shift". For the information asked use "CERN" for location and "Egamma Certification" as the reason. The expert will enroll you as a shifter. General instructions can be found on the right hand side of the page under "Common Offline Shift taker actions".

Instructions for Certifications: Login to the page https://cmsweb.cern.ch/ Once logged in select the "offline" hyperlink in DQM. You will see several summary plots once you visit the page. Select the yellow dropdown button next "Workspace" then in "POG" list select "EGamma". Next select "gedPhotonAnalyzer" then "GoodCandidatePhotons" and then "Et above 20 GeV". Now, click on "Run" and search for run number that you are interested in with the search option set to "Any". A long list of modules are available for each run. We are interested in the "/PAEGJet1/PARun2016C-PromptReco-v1/DQMIO: (1)" module. Clicking on this module gives a hyperlink named after the run number. Visiting the hyperlink we can see several plots in the "Et above 20 GeV" folder. Now depending on the plots we can tag the run as Good or Bad.

-- PrasannaSiddireddy - 2017-01-19