Instantaneous Outputs from SubVIs to MainVI

I have multiple SubVIs (SubVI-A and SubVI-B) being called by my MainVI. All control variables and indicators are located in the MainVI.

There are many control variables as inputs to the SubVIs and indictors comming out of the SubVIs to be displayed on the MainVI.

While my SubVI is executing (ex: SubVI-A), I want my indicators on the MainVI to display the outputs instantaneously. The reason for this is because there is another SubVI (ex: SubVI-B) in the MainVI that requires SubVI-A's output instantaneously to carryout its funcation.

How do I do this?