Hi,
Here's what you need to do
First of all I'm going to number the points to 'hopefully' make things clearer.
Point 1 is the top left point, 2,3 & 4 are the other 3 on the top most line
Point 5 is the first point on the bottom line that leads to the kick back siding and 6,7 & 8 are the points in the loops
First you need to put power to the left of point 1 AND between points 5 & 6 otherwise you won't be able to power the kick back siding.
This means that you will need to insulate between points 1 & 5
In the loop, point 6 to 8 needs insulating as does point 7 to 8, 6 to 7 can be left as is.
Points 2,3,&4 don't need insulating.
If this is N Gauge then it doesn't matter if its DCC or DC, the only consideration being that on DC you could only run two locos as you only have 2 independent power feeds.
I have been told that for OO Peco Electrofrog points need modifed for DCC, but as I model in N Gauge, I don't have any personal experience.
Regards,
John P