MMMC in encounter

 Have you looked at the User Guide chapter called "Performing Multi-Mode Multi-Corner Timing Analysis and Optimization" (it's Ch. 37 in the 8.1 docs, should be similar in 7.x). I recommend going through this chapter. Here is a VERY brief example though: (it assumes you have your max and min .lib files and .cdB files in the .conf file that was used to load the design).

 ## Create library views
 create_library_set  \
  -name ff_m55c \
  -timing $rda_Input(ui_timelib,min) \
  -si $rda_Input(ui_cdb_file,min)

 create_library_set  \
  -name ss_125c \
  -timing $rda_Input(ui_timelib,max) \
  -si $rda_Input(ui_cdb_file,max)

 ## Create RC Corners
 create_rc_corner -name ff_m55c_cmin_m55c \
                 -cap_table "SigCmin.CapTbl" \
                 -T -55 \
                 -qx_tech_file "SigCmin.tch"                                                  

 create_rc_corner -name ss_125c_cmax_125c \
                 -cap_table "SigCmax.CapTbl" \
                 -T 125 \
                 -qx_tech_file "SigCmax.tch"


 ## Create Delay Corners
 create_delay_corner -name ff_m55c_cmin_m55c \
                    -library_set ff_m55c \
                    -rc_corner ff_m55c_cmin_m55c

 create_delay_corner -name ss_125c_cmax_125c \
                    -library_set ss_125c \
                    -rc_corner ss_125c_cmax_125c

 ## Create Constraint Modes
 create_constraint_mode -name func_ss_125c -sdc_files   func.ss_125c.sdc
 create_constraint_mode -name func_ff_m55c -sdc_files   func.ff_m55c.sdc
 create_constraint_mode -name test_ss_125c -sdc_files   test.ss_125c.sdc
 create_constraint_mode -name test_ff_m55c -sdc_files   test.ff_m55c.sdc


 ## Create Analysis Views
 create_analysis_view -name func_ss_125c    -delay_corner ss_125c_cmax_125c -constraint_mode func_ss_125c
 create_analysis_view -name func_ff_m55c    -delay_corner ff_m55c_cmax_m55c -constraint_mode func_ff_m55c
 create_analysis_view -name test_ss_125c    -delay_corner ss_125c_cmax_125c -constraint_mode test_ss_125c
 create_analysis_view -name test_ff_m55c    -delay_corner ff_m55c_cmax_m55c -constraint_mode test_ff_m55c

 ## Set Analysis View
 set_analysis_view -setup {func_ss_125c test_ss_125c } \
                   -hold  {func_ff_m55c test_ff_m55c }

User guides can be found on support.cadence.com. Since the original post referred to the manuals for 8.x, the chapter may be called something different in 14.x.