The old CCR macro channels work like this. Resolution means "how many pixels control 50?" 50 controlling 50 is normal which means you are not multiplying at all. The macros were never upgraded to work for strings longer than 50. And S5 does not preview macros. I have used them extensively in S4 so this is a barrier for me to move to S5.
If you set the resolution to 1 that means the first pixel in your sequence will control all 50 pixels on the lights. This is a short cut: when your want your entire string to be white.. you set pixel 1 white and resolution to 1. Setting resolution to 2 means first 2 pixels of the sequence control first 25 and second 25. My friend JR refers to resolution in HWU. In your sequence you do not need to specify 50 in resolution all the time to control 50 pixels of string with 50 pixels in your sequence. You just leave it blank/zero. The HWU value is used when the sequence does not have a value which is a good multiplier. Blank/Zero is not a good multiplier so 50 takes its place.
The only possible values which work in sequence and in HWU are
Resolution 1 controls 1 group of 50 using pixel 1 in the sequence
Resolution 2 controls 2 groups of 25 using pixels 1-2 in the sequence
Resolution 5 controls 5 groups of 10 using pixels 1-5 in the sequence
Resolution 10 controls 10 groups of 5 using pixels 1-10 in the sequence
Resolution 16 controls 16 groups of 3 using pixels 1-16 in the sequence (end groups are one long)
Resolution 17 controls 17 groups of 3 using pixels 1-17 in the sequence (center group is one short)
Resolution 25 controls 25 groups of 2 using pixels 1-25 in the sequence
Resolution 50 controls 50 pixels using pixels 1-50 in the sequence
This S4 sequence, still in use, is about 7 years old. It has resolution 1 and moving blocks of pixels.
How this macro looks is here in a really old video