Deletion of opponents / respondents names

I am fighting a case in a consumer forum and I have 4 Opponents / Respondents names in my original complaint.  Two of which not now much in a scope , they have been included intially as they are part of series of incidences that happen , both of them never appeared too. Now I want to request deletion of their name from the complaint , so as to speed up the trial (as absence of them otherwise creates a reason for delay  / postponing the hearings). But before that I want to understand the possible consequences of doing that like -

1) How it will impact me ? in my favour  or against ?

2)what extra things I need to take care before doing that ? Do I need to send copy of my request for deletion to all opponents again and need to submit proof of that ?

3) How it will impact the remaining opposite parties ? in their favour  or against ?

4) How it impact the hearing in terms of speeding up the trial ?

Please help . I will be available to answer any clarifications if you have.