Sequntial Process flow

[sandbox_csl]

Team,
I have a requirement whereby which
a process goes through multiple process state from its start to end. Multiple type of users take action in each stage and record their decision and let process progress to next stage.
S2 stage ccan be reached only after s1 and s3 can be reached only after s2…Sn+1 can be reached only after Sn.How this can be done and multiple users can be assigned in each level.

[Aleksi]

I would create this functionality with related table structure where the States are parent records and comments/decisions are child records. I would probably keep all Stages as different records. Then you can easily control are you able to create a new Stage or not. Though this can be done with one Stage record.