Thank you so much @Creations and @salmonmac.
Indeed, this is the Cuff to Cuff sweater. I am on to a simple cotton camisole at the moment, but am exploring this as my next project. As I read through the instructions, I was confused by the stitch count. Although most patterns are written with quite some detail, some free patterns leave interpretations to the experienced knitter and a couple of difficult experiences has led me to read the pattern out in full before starting or even selecting the project. I remember one of the earliest guidance from @salmonmac to read multiple times and sleep over it too 
I must say I have not fully wrapped my head around the answer to the Q3, and am trying to write down row by row - your detailed explanation and the videos help a ton, Thank you so much @Creations and @salmonmac ! The videos clearly explain the left leaning and right leaning increases and I would do this just after and before the selvedges at each end.
I have written out the rows to internalise : I guess I am working towards adding the (K4,P2) stitches on the outside of the Marker on either ends of WS row. Yippeee ! I have the Row 45 like you have detailed @Creations ! Please could you check Row 49 and Row 53 for me ? I think they are right, as the pattern repeats nicely on either side of the Markers - your review would help much !
After Row 56, the 6th row increases are done 3 times in Rows 62, 68 and 74. Row 74 ends with an incomplete repeat at either end.
First row increase in Row 8 : Selvedge, Inc, M, P2, (K4,P2)x6, M, Inc, Selvedge : 42 Stitches
Row 13 (next set of row 5) : Selvedge, P, M, K2, (P4, K2)x6, M, P, Selvedge
Row 14 (Row 6) : Selvedge, K, M, P2, (K4, P2)x6, M, K, Selvedge
Row 15 (Row 7) : Selvedge, P, M, K2, (P4, K2)x6, M, P, Selvedge
Row 16 (Row 8) : Selvedge, Inc, P, M, P2, (K4, P2)x6, M, P, Inc, Selvedge : 44 stitches
Row 21 (Row 5) : Selvedge, P,P, M, K2, (P4, K2)x6, M, P, P, Selvedge
Row 22 (Row 6) : Selvedge, K, K, M, P2, (K4, P2)x6, M, K, K, Selvedge
Row 23 (Row 7) : Selvedge, P,P, M, K2, (P4, K2)x6, M, P, P, Selvedge
Row 24 (Row 8) : Selvedge, Inc, K, K, M, P2, (K4, P2)x 6, M, K, K, Inc, Selvedge : 46 Stitches
Row 29 (Row 5) : Selvedge, P, P, P, M, K2, (P4, K2)x6, M, P, P, P, Selvedge
Row 30 (Row 6) : Selv, K, K, K, M, P2, (K4, P2)x6, M, K, K, K, Selv
Row 31 (Row 7): Selvedge, P, P, P, M, K2, (P4, K2)x6, M, K, K, K, Selvedge
Row 32 (Row 8) : Selvedge, Inc, K, K, K, M, P2, (K4, P2)x6, M, K, K, K, Inc, Selvedge : 48 St
Row 37 (Row 5): Selvedge, P, P, P, P, M, K2, (P4, K2)x6, M, P, P, P, P, Selvedge
Row 38 (Row 6) : Selvedge, K, K, K, K, M, P2, (K4, P2)x6, M, K, K, K, K, K, Selvedge
Row 39 (Row 7) : Selvedge, P, P, P, P, M, K2, (P4, K2)x6, M, P, P, P, P, P, Selvedge
Row 40 (Row 8) : Selvedge, Inc, K4, M, P2, (K4, P2)x6, M, K4, Inc, Selvedge : 50 St
Row 45 (Row 5) : Selvedge, K, P4, M, K2,(P4, K2)x6, M, P4, K, Selvedge
Row 46 (Row 6): Selvedge, P, K4, M, P2,(K4, P2)x6, M, K4, P, Selvedge
Row 47 (Row 7) : Selvedge, K, P4, M, K2, (P4,K2)x6, M, P4, K, Selvedge
Row 48 (Row 8) : Selvedge, Inc, P, K4, M, P2, (K4, P2)x6, M, K4, P, Inc, Selvedge : 52 St
Row 53(Row 5): Selvedge, K2, P4, M, K2, (P4, K2)x6, M, P4, K2, Selvedge
Row 54 (Row 6) : Selvedge, P2, K4, M, P2, (K4, P2)x6, M, K4, P2, Selvedge
Row 55 (Row 7) : Selvedge, K2, P4, M, K2, (P4, K2)x6, M, P4, K2, Selvedge
Row 56 (Row8): Selvedge, Inc,P2, K4, M, P2, (K4, P2)x6,M, K4, P2,Inc, Selvedge: 54 St (End of the 8th row increases)
Row 57 (Row 1) : Selvedge, All Knit, Selvedge
Row 58 (Row 2) : Selvedge, All Purl, Selvedge
Row 59 (Row 3), Selvedge, All Knit, Selvedge
Row 60 (Row 4) : Selvedge, All Purl, Selvedge
Row 61 (Row 5): Selvedge, P, M, K2, P4, M, K2, (P4, K2)x6, M, P4, K2, M, P, Selvedge
Row 62 (Row 6) : Selvedge, Inc, K, M, P2, K4, M, P2, (K4, P2)x6, M, K4, P2, M, K, Inc, Selvedge : 56 St
Row 63 (Row 7) : Selvedge, P, P, M, K2, P4, M, K2, (P4, K2)x6, M, P4, K2, M, P, P, Selv
Row 64 (Row 8) : Selvedge, K, K, M, P2, K4, M, P2, (K4, P2)x6, M, K4, P2, M, K, K, Selv
Row 65 (Row 1) : Selvedge, All Knit, Selvedge
Row 66 (Row 2) : Selvedge, All Purl, Selvedge
Row 67 (Row 3): Selvedge, All Knit, Selvedge
Row 68 (Row 4) : Selvedge, Inc, All Purl, Inc, Selvedge : 58 Stitches
Row 69 (Row 5) : Selvedge, P, P, P, M, K2, P4, M, K2, (P4, K2)x6, M, P4, K2, M, P, P, P, Selvedge
Row 70 (Row 6) : Selvedge, K, K, K, M, P2, K4, M, P2, (K4, P2)x6, M, K4, P2, M, K, K, K, Selvedge
Row 71 (Row 7) : Selvedge, P, P, P, M, K2, P4, M, K2, (P4, K2)x6, M, P4, K2, M, P, P, P, Selvedge
Row 72 (Row 8) : Selvedge, K, K, K, M, P2, K4, M, P2, (K4, P2)x6, M, K4, P2, M, K, K, K, Selvedge
Row 73 (Row 1) : Selvedge, All Knit, Selvedge
Row 74 (Row 2) : Selvedge, Inc, All Purl, Inc, Selvedge : 60 St
That was a very interesting exercise and reminds me of the time we had to write out computer programs before going inside the lab for the short 1 hour slot we were allocated :- 