working in shell especially in MY is very different from other companies. In other, companies u will get promotion within ur current position and get increament annually even u r in the position for 10 or 20 yrs... E.g.  u working as an account in department A, maybe after 5 yrs u will promoted to Sr.Account within department A and so on...but this will not happen in shell (as far i know). In shell, your seniority and title are nothing as JG (job group) is more important and JG is determine by the natural of that position and scope of responsibilities.. So, if you are JG7 in ur current role then forever u will be still JG7 after 10 yrs or 20 yrs as long u still in ur current role. Your annual increament and max salary range also determine by ur JG. e.g. if ur JG max salary is RM8K then once u reach that max level, u will not get anymore annual increament no matter how outstanding you are.
  Thus, in order to upgrade or jump from 1 JG to another JG then you must keep on upgrading ur competency levels as every JGs has their own set of competencies .  So, some of you may think as long i am happy doing what i am doing now and happy with the salary even there is no increament then u can forget of upgrading ur competency levels then you are wrong. Shell is very active in cost cutting now thus they are merging alot jobs and positions currently(more heads on chopping board) and this is ongoing stuff thus if you are affected and you want to apply other jobs within shell but u are not competent enough so you will treat as redundent and will be ask to leave or VSS.

    To summarised, you shall only need to worry abt your competency levels and work hard; shell will take care the rest for you. Remember, you are the one looking for job and keep on looking for jobs in shell 

JG4 is Mgr or Sr Mgr? What are the 'better/ extra' benefits for this grade?