How can i make a custom record ID?

RNSEG

Current data set looks like this. 

Region	Row	LinkID	Name	Value
Share Summary	2	1	Column 4	12137.178
Share Summary	2	1	Column 5	1685.694
Share Summary	2	1	Column 6	-12137.18
Share Summary	2	1	Column 7	0
Share Summary	2	1	Column 8	0
Share Summary	2	1	Column 9	0
Share Summary	2	1	Column 10	0
Share Summary	2	2	Column 4	3848.2388
Share Summary	2	2	Column 5	1586.5782
Share Summary	2	2	Column 6	0
Share Summary	2	2	Column 7	3848.2388
Share Summary	2	2	Column 8	1469.2983
Share Summary	2	2	Column 9	5654210.9
Share Summary	2	2	Column 10	-0.0739
Share Summary	2	3	Column 4	2850.1095
Share Summary	2	3	Column 5	1685.694
Share Summary	2	3	Column 6	0
Share Summary	2	3	Column 7	2850.1095
Share Summary	2	3	Column 8	1561.2177
Share Summary	2	3	Column 9	4449641.3
Share Summary	2	3	Column 10	-0.0738
Share Summary	2	4	Column 4	535.7528
Share Summary	2	4	Column 5	1685.694
Share Summary	2	4	Column 6	0
Share Summary	2	4	Column 7	535.7528
Share Summary	2	4	Column 8	1561.2177
Share Summary	2	4	Column 9	836426.76
Share Summary	2	4	Column 10	-0.0738
Share Summary	2	5	Column 4	1406.3729
Share Summary	2	5	Column 5	1685.694
Share Summary	2	5	Column 6	0
Share Summary	2	5	Column 7	1406.3729
Share Summary	2	5	Column 8	1561.2177
Share Summary	2	5	Column 9	2195654.2
Share Summary	2	5	Column 10	-0.0738

I would like to add a column in between that basically has a sequential record ID for each Link ID numbers from 1 to 7 as below. What tools is the best for this? Any tips are appreciated. Below is my desired format. This is only a portion of a large data set, and Name column is not necessarily going to have the same number ordering (currently i have it still included for sorting but plan to remove it once i can add a new sequential record). I am thinking that the link ID column is the best to use to add this. 

Region	Row	LinkID	New Column	Name	Value
Share Summary	2	1	1	Column 4	12137.178
Share Summary	2	1	2	Column 5	1685.694
Share Summary	2	1	3	Column 6	-12137.18
Share Summary	2	1	4	Column 7	0
Share Summary	2	1	5	Column 8	0
Share Summary	2	1	6	Column 9	0
Share Summary	2	1	7	Column 10	0
Share Summary	2	2	1	Column 4	3848.2388
Share Summary	2	2	2	Column 5	1586.5782
Share Summary	2	2	3	Column 6	0
Share Summary	2	2	4	Column 7	3848.2388
Share Summary	2	2	5	Column 8	1469.2983
Share Summary	2	2	6	Column 9	5654210.9
Share Summary	2	2	7	Column 10	-0.0739
Share Summary	2	3	1	Column 4	2850.1095
Share Summary	2	3	2	Column 5	1685.694
Share Summary	2	3	3	Column 6	0
Share Summary	2	3	4	Column 7	2850.1095
Share Summary	2	3	5	Column 8	1561.2177
Share Summary	2	3	6	Column 9	4449641.3
Share Summary	2	3	7	Column 10	-0.0738
Share Summary	2	4	1	Column 4	535.7528
Share Summary	2	4	2	Column 5	1685.694
Share Summary	2	4	3	Column 6	0
Share Summary	2	4	4	Column 7	535.7528
Share Summary	2	4	5	Column 8	1561.2177
Share Summary	2	4	6	Column 9	836426.76
Share Summary	2	4	7	Column 10	-0.0738
Share Summary	2	5	1	Column 4	1406.3729
Share Summary	2	5	2	Column 5	1685.694
Share Summary	2	5	3	Column 6	0
Share Summary	2	5	4	Column 7	1406.3729
Share Summary	2	5	5	Column 8	1561.2177
Share Summary	2	5	6	Column 9	2195654.2
Share Summary	2	5	7	Column 10	-0.0738

Thank you!

TheMattLeonard

You're definitely after the Tile tool. Select "Unique Value" as the Tile Method and select Row and LinkID as the Unique columns. Make sure to check the box for "Leave Unsorted" as that can sometimes mess up your results.