Flowchart representing the process of selecting cluster members. The red branch in the left represents the steps described in Sect. 5.1. The blue boxes are for the dwarf galaxies in Sect. 5.2, and in green we illustrate the different steps we followed to check for any possible additional member, starting from the SourceExtractor (SE on the flowchart) catalogue, discussed in Sect. 5.4. Numbers in italic and between parentheses represent the galaxies brighter than the completeness limit we adopted for the LF, M(I_E) ≤ −11.33.