This field corresponds to the signature level, when signature events follow each other:
The corresponding LEVSIG variable is frequently used in the Workflow rules when the allocation rule of the original event specifies all the signers (1 to 9 maximum). For the original event as for the signature events that follow each other, the USER(LEVSIG+1) recipient formula only needs to be specified to obtain the user number N in the list. This makes it possible, among others, to have recursive signature rules, that are executed as long as signers are left.