DOPT issued clarification on bunching of increments. Though the clarification refers to AIS Pay scale but it can be assumed that it will applicable for others too.
".... this Department has been receiving queries from various Ministries/Departments/State Governments for fixation of pay in respect of members of Service whose pay gets fixed at the same Cell,in the applicable Level in the new Pay Matrix. The matter was clarified vide OM No.13021/1/2016-AIS-I (Pt.2) dated the 10th October, 2016 (copy enclosed). It is once again clarified that as per Rule 4 (A)(ii) of IAS (Pay) Rule, 2016, in cases of fixation of pay of IAS officers drawing pay at two or more stages in the pre-revised Pay Band and Grade Pay gets fixed at the same Cell in the applicable Level of the Pay Matrix, one additional increment may be given for every two stages bunched so that the pay of the member of Service drawing higher pay in the pre-revised structure is fixed at the next vertical Cell in the applicable Level."
Click here for the clarification with illustration
".... this Department has been receiving queries from various Ministries/Departments/State Governments for fixation of pay in respect of members of Service whose pay gets fixed at the same Cell,in the applicable Level in the new Pay Matrix. The matter was clarified vide OM No.13021/1/2016-AIS-I (Pt.2) dated the 10th October, 2016 (copy enclosed). It is once again clarified that as per Rule 4 (A)(ii) of IAS (Pay) Rule, 2016, in cases of fixation of pay of IAS officers drawing pay at two or more stages in the pre-revised Pay Band and Grade Pay gets fixed at the same Cell in the applicable Level of the Pay Matrix, one additional increment may be given for every two stages bunched so that the pay of the member of Service drawing higher pay in the pre-revised structure is fixed at the next vertical Cell in the applicable Level."
Click here for the clarification with illustration